Fix submodule git directory paths for includeIf

* Update README to include Node.js 24 support details and requirements

* Update

README.md

@@ -2,7 +2,11 @@
 
 # Checkout V5
 
-Checkout v5 now supports Node.js 24
+## What's new
+
+- Updated to the node24 runtime
+  - This requires a minimum Actions Runner version of [v2.327.1](https://github.com/actions/runner/releases/tag/v2.327.1) to run.
+
 
 # Checkout V4
 
@@ -154,9 +158,10 @@ Please refer to the [release page](https://github.com/actions/checkout/releases/
 # Scenarios
 
 - [Checkout V5](#checkout-v5)
+  - [What's new](#whats-new)
 - [Checkout V4](#checkout-v4)
     - [Note](#note)
-- [What's new](#whats-new)
+- [What's new](#whats-new-1)
 - [Usage](#usage)
 - [Scenarios](#scenarios)
   - [Fetch only the root files](#fetch-only-the-root-files)

__test__/git-auth-helper.test.ts

@@ -86,16 +86,29 @@ describe('git-auth-helper tests', () => {
     // Act
     await authHelper.configureAuth()
 
-    // Assert config
+    // Assert config - check that .git/config contains includeIf entries
-    const configContent = (
+    const localConfigContent = (
       await fs.promises.readFile(localGitConfigPath)
     ).toString()
+    expect(
+      localConfigContent.indexOf('includeIf.gitdir:')
+    ).toBeGreaterThanOrEqual(0)
+
+    // Assert credentials config file contains the actual credentials
+    const credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
+      f => f.startsWith('git-credentials-') && f.endsWith('.config')
+    )
+    expect(credentialsFiles.length).toBe(1)
+    const credentialsConfigPath = path.join(runnerTemp, credentialsFiles[0])
+    const credentialsContent = (
+      await fs.promises.readFile(credentialsConfigPath)
+    ).toString()
     const basicCredential = Buffer.from(
       `x-access-token:${settings.authToken}`,
       'utf8'
     ).toString('base64')
     expect(
-      configContent.indexOf(
+      credentialsContent.indexOf(
         `http.${expectedServerUrl}/.extraheader AUTHORIZATION: basic ${basicCredential}`
       )
     ).toBeGreaterThanOrEqual(0)
@@ -120,7 +133,7 @@ describe('git-auth-helper tests', () => {
     'inject https://github.com as github server url'
   it(configureAuth_AcceptsGitHubServerUrlSetToGHEC, async () => {
     await testAuthHeader(
-      configureAuth_AcceptsGitHubServerUrl,
+      configureAuth_AcceptsGitHubServerUrlSetToGHEC,
       'https://github.com'
     )
   })
@@ -141,12 +154,17 @@ describe('git-auth-helper tests', () => {
       // Act
       await authHelper.configureAuth()
 
-      // Assert config
+      // Assert config - check credentials config file (not local .git/config)
-      const configContent = (
+      const credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
-        await fs.promises.readFile(localGitConfigPath)
+        f => f.startsWith('git-credentials-') && f.endsWith('.config')
+      )
+      expect(credentialsFiles.length).toBe(1)
+      const credentialsConfigPath = path.join(runnerTemp, credentialsFiles[0])
+      const credentialsContent = (
+        await fs.promises.readFile(credentialsConfigPath)
       ).toString()
       expect(
-        configContent.indexOf(
+        credentialsContent.indexOf(
           `http.https://github.com/.extraheader AUTHORIZATION`
         )
       ).toBeGreaterThanOrEqual(0)
@@ -251,13 +269,16 @@ describe('git-auth-helper tests', () => {
       expectedSshCommand
     )
 
-    // Asserty git config
+    // Assert git config
     const gitConfigLines = (await fs.promises.readFile(localGitConfigPath))
       .toString()
       .split('\n')
       .filter(x => x)
-    expect(gitConfigLines).toHaveLength(1)
+    // Should have includeIf entries pointing to credentials file
-    expect(gitConfigLines[0]).toMatch(/^http\./)
+    expect(gitConfigLines.length).toBeGreaterThan(0)
+    expect(
+      gitConfigLines.some(line => line.indexOf('includeIf.gitdir:') >= 0)
+    ).toBeTruthy()
   })
 
   const configureAuth_setsSshCommandWhenPersistCredentialsTrue =
@@ -419,8 +440,20 @@ describe('git-auth-helper tests', () => {
     expect(
       configContent.indexOf('value-from-global-config')
     ).toBeGreaterThanOrEqual(0)
+    // Global config should have include.path pointing to credentials file
+    expect(configContent.indexOf('include.path')).toBeGreaterThanOrEqual(0)
+
+    // Check credentials in the separate config file
+    const credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
+      f => f.startsWith('git-credentials-') && f.endsWith('.config')
+    )
+    expect(credentialsFiles.length).toBeGreaterThan(0)
+    const credentialsConfigPath = path.join(runnerTemp, credentialsFiles[0])
+    const credentialsContent = (
+      await fs.promises.readFile(credentialsConfigPath)
+    ).toString()
     expect(
-      configContent.indexOf(
+      credentialsContent.indexOf(
         `http.https://github.com/.extraheader AUTHORIZATION: basic ${basicCredential}`
       )
     ).toBeGreaterThanOrEqual(0)
@@ -463,8 +496,20 @@ describe('git-auth-helper tests', () => {
       const configContent = (
         await fs.promises.readFile(path.join(git.env['HOME'], '.gitconfig'))
       ).toString()
+      // Global config should have include.path pointing to credentials file
+      expect(configContent.indexOf('include.path')).toBeGreaterThanOrEqual(0)
+
+      // Check credentials in the separate config file
+      const credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
+        f => f.startsWith('git-credentials-') && f.endsWith('.config')
+      )
+      expect(credentialsFiles.length).toBeGreaterThan(0)
+      const credentialsConfigPath = path.join(runnerTemp, credentialsFiles[0])
+      const credentialsContent = (
+        await fs.promises.readFile(credentialsConfigPath)
+      ).toString()
       expect(
-        configContent.indexOf(
+        credentialsContent.indexOf(
           `http.https://github.com/.extraheader AUTHORIZATION: basic ${basicCredential}`
         )
       ).toBeGreaterThanOrEqual(0)
@@ -550,11 +595,14 @@ describe('git-auth-helper tests', () => {
       await authHelper.configureSubmoduleAuth()
 
       // Assert
+      // Should get submodule config paths (1 call) and configure insteadOf (2 calls for two values)
       expect(mockSubmoduleForeach).toHaveBeenCalledTimes(4)
       expect(mockSubmoduleForeach.mock.calls[0][0]).toMatch(
         /unset-all.*insteadOf/
       )
-      expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(/http.*extraheader/)
+      expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(
+        /show-origin.*remote\.origin\.url/
+      )
       expect(mockSubmoduleForeach.mock.calls[2][0]).toMatch(
         /url.*insteadOf.*git@github.com:/
       )
@@ -589,11 +637,14 @@ describe('git-auth-helper tests', () => {
       await authHelper.configureSubmoduleAuth()
 
       // Assert
+      // Should get submodule config paths (1 call) and configure sshCommand (1 call)
       expect(mockSubmoduleForeach).toHaveBeenCalledTimes(3)
       expect(mockSubmoduleForeach.mock.calls[0][0]).toMatch(
         /unset-all.*insteadOf/
       )
-      expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(/http.*extraheader/)
+      expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(
+        /show-origin.*remote\.origin\.url/
+      )
       expect(mockSubmoduleForeach.mock.calls[2][0]).toMatch(/core\.sshCommand/)
     }
   )
@@ -660,296 +711,35 @@ describe('git-auth-helper tests', () => {
     await setup(removeAuth_removesToken)
     const authHelper = gitAuthHelper.createAuthHelper(git, settings)
     await authHelper.configureAuth()
-    let gitConfigContent = (
+
+    // Sanity check - verify includeIf entries exist in local config
+    let localConfigContent = (
       await fs.promises.readFile(localGitConfigPath)
     ).toString()
-    expect(gitConfigContent.indexOf('http.')).toBeGreaterThanOrEqual(0) // sanity check
-
-    // Act
-    await authHelper.removeAuth()
-
-    // Assert git config
-    gitConfigContent = (
-      await fs.promises.readFile(localGitConfigPath)
-    ).toString()
-    expect(gitConfigContent.indexOf('http.')).toBeLessThan(0)
-  })
-
-  const removeAuth_removesV6StyleCredentials =
-    'removeAuth removes v6 style credentials'
-  it(removeAuth_removesV6StyleCredentials, async () => {
-    // Arrange
-    await setup(removeAuth_removesV6StyleCredentials)
-    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
-    await authHelper.configureAuth()
-
-    // Manually create v6-style credentials that would be left by v6
-    const credentialsFileName =
-      'git-credentials-12345678-1234-1234-1234-123456789abc.config'
-    const credentialsFilePath = path.join(runnerTemp, credentialsFileName)
-    const basicCredential = Buffer.from(
-      `x-access-token:${settings.authToken}`,
-      'utf8'
-    ).toString('base64')
-    const credentialsContent = `[http "https://github.com/"]\n\textraheader = AUTHORIZATION: basic ${basicCredential}\n`
-    await fs.promises.writeFile(credentialsFilePath, credentialsContent)
-
-    // Add includeIf entries to local git config (simulating v6 configuration)
-    const hostGitDir = path.join(workspace, '.git').replace(/\\/g, '/')
-    await fs.promises.appendFile(
-      localGitConfigPath,
-      `[includeIf "gitdir:${hostGitDir}/"]\n\tpath = ${credentialsFilePath}\n`
-    )
-    await fs.promises.appendFile(
-      localGitConfigPath,
-      `[includeIf "gitdir:/github/workspace/.git/"]\n\tpath = /github/runner_temp/${credentialsFileName}\n`
-    )
-
-    // Verify v6 style config exists
-    let gitConfigContent = (
-      await fs.promises.readFile(localGitConfigPath)
-    ).toString()
-    expect(gitConfigContent.indexOf('includeIf')).toBeGreaterThanOrEqual(0)
     expect(
-      gitConfigContent.indexOf(credentialsFilePath)
+      localConfigContent.indexOf('includeIf.gitdir:')
     ).toBeGreaterThanOrEqual(0)
-    await fs.promises.stat(credentialsFilePath) // Verify file exists
 
-    // Mock the git methods to handle v6 cleanup
+    // Sanity check - verify credentials file exists
-    const mockTryGetConfigKeys = git.tryGetConfigKeys as jest.Mock<any, any>
+    let credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
-    mockTryGetConfigKeys.mockResolvedValue([
+      f => f.startsWith('git-credentials-') && f.endsWith('.config')
-      `includeIf.gitdir:${hostGitDir}/.path`,
-      'includeIf.gitdir:/github/workspace/.git/.path'
-    ])
-
-    const mockTryGetConfigValues = git.tryGetConfigValues as jest.Mock<any, any>
-    mockTryGetConfigValues.mockImplementation(async (key: string) => {
-      if (key === `includeIf.gitdir:${hostGitDir}/.path`) {
-        return [credentialsFilePath]
-      }
-      if (key === 'includeIf.gitdir:/github/workspace/.git/.path') {
-        return [`/github/runner_temp/${credentialsFileName}`]
-      }
-      return []
-    })
-
-    const mockTryConfigUnsetValue = git.tryConfigUnsetValue as jest.Mock<
-      any,
-      any
-    >
-    mockTryConfigUnsetValue.mockImplementation(
-      async (
-        key: string,
-        value: string,
-        globalConfig?: boolean,
-        configPath?: string
-      ) => {
-        const targetPath = configPath || localGitConfigPath
-        let content = await fs.promises.readFile(targetPath, 'utf8')
-        // Remove the includeIf section
-        const lines = content
-          .split('\n')
-          .filter(line => !line.includes('includeIf') && !line.includes(value))
-        await fs.promises.writeFile(targetPath, lines.join('\n'))
-        return true
-      }
     )
+    expect(credentialsFiles.length).toBe(1)
 
     // Act
     await authHelper.removeAuth()
 
     // Assert includeIf entries removed from local git config
-    gitConfigContent = (
+    localConfigContent = (
       await fs.promises.readFile(localGitConfigPath)
     ).toString()
-    expect(gitConfigContent.indexOf('includeIf')).toBeLessThan(0)
+    expect(localConfigContent.indexOf('includeIf.gitdir:')).toBeLessThan(0)
-    expect(gitConfigContent.indexOf(credentialsFilePath)).toBeLessThan(0)
 
     // Assert credentials config file deleted
-    try {
+    credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
-      await fs.promises.stat(credentialsFilePath)
+      f => f.startsWith('git-credentials-') && f.endsWith('.config')
-      throw new Error('Credentials file should have been deleted')
-    } catch (err) {
-      if ((err as any)?.code !== 'ENOENT') {
-        throw err
-      }
-    }
-  })
-
-  const removeAuth_removesV6StyleCredentialsFromSubmodules =
-    'removeAuth removes v6 style credentials from submodules'
-  it(removeAuth_removesV6StyleCredentialsFromSubmodules, async () => {
-    // Arrange
-    await setup(removeAuth_removesV6StyleCredentialsFromSubmodules)
-
-    // Create fake submodule config paths
-    const submodule1Dir = path.join(workspace, '.git', 'modules', 'submodule-1')
-    const submodule1ConfigPath = path.join(submodule1Dir, 'config')
-    await fs.promises.mkdir(submodule1Dir, {recursive: true})
-    await fs.promises.writeFile(submodule1ConfigPath, '')
-
-    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
-    await authHelper.configureAuth()
-
-    // Create v6-style credentials file
-    const credentialsFileName =
-      'git-credentials-abcdef12-3456-7890-abcd-ef1234567890.config'
-    const credentialsFilePath = path.join(runnerTemp, credentialsFileName)
-    const basicCredential = Buffer.from(
-      `x-access-token:${settings.authToken}`,
-      'utf8'
-    ).toString('base64')
-    const credentialsContent = `[http "https://github.com/"]\n\textraheader = AUTHORIZATION: basic ${basicCredential}\n`
-    await fs.promises.writeFile(credentialsFilePath, credentialsContent)
-
-    // Add includeIf entries to submodule config
-    const submodule1GitDir = submodule1Dir.replace(/\\/g, '/')
-    await fs.promises.appendFile(
-      submodule1ConfigPath,
-      `[includeIf "gitdir:${submodule1GitDir}/"]\n\tpath = ${credentialsFilePath}\n`
     )
-
+    expect(credentialsFiles.length).toBe(0)
-    // Verify submodule config has includeIf entry
-    let submoduleConfigContent = (
-      await fs.promises.readFile(submodule1ConfigPath)
-    ).toString()
-    expect(submoduleConfigContent.indexOf('includeIf')).toBeGreaterThanOrEqual(
-      0
-    )
-    expect(
-      submoduleConfigContent.indexOf(credentialsFilePath)
-    ).toBeGreaterThanOrEqual(0)
-
-    // Mock getSubmoduleConfigPaths
-    const mockGetSubmoduleConfigPaths =
-      git.getSubmoduleConfigPaths as jest.Mock<any, any>
-    mockGetSubmoduleConfigPaths.mockResolvedValue([submodule1ConfigPath])
-
-    // Mock tryGetConfigKeys for submodule
-    const mockTryGetConfigKeys = git.tryGetConfigKeys as jest.Mock<any, any>
-    mockTryGetConfigKeys.mockImplementation(
-      async (pattern: string, globalConfig?: boolean, configPath?: string) => {
-        if (configPath === submodule1ConfigPath) {
-          return [`includeIf.gitdir:${submodule1GitDir}/.path`]
-        }
-        return []
-      }
-    )
-
-    // Mock tryGetConfigValues for submodule
-    const mockTryGetConfigValues = git.tryGetConfigValues as jest.Mock<any, any>
-    mockTryGetConfigValues.mockImplementation(
-      async (key: string, globalConfig?: boolean, configPath?: string) => {
-        if (
-          configPath === submodule1ConfigPath &&
-          key === `includeIf.gitdir:${submodule1GitDir}/.path`
-        ) {
-          return [credentialsFilePath]
-        }
-        return []
-      }
-    )
-
-    // Mock tryConfigUnsetValue for submodule
-    const mockTryConfigUnsetValue = git.tryConfigUnsetValue as jest.Mock<
-      any,
-      any
-    >
-    mockTryConfigUnsetValue.mockImplementation(
-      async (
-        key: string,
-        value: string,
-        globalConfig?: boolean,
-        configPath?: string
-      ) => {
-        const targetPath = configPath || localGitConfigPath
-        let content = await fs.promises.readFile(targetPath, 'utf8')
-        const lines = content
-          .split('\n')
-          .filter(line => !line.includes('includeIf') && !line.includes(value))
-        await fs.promises.writeFile(targetPath, lines.join('\n'))
-        return true
-      }
-    )
-
-    // Act
-    await authHelper.removeAuth()
-
-    // Assert submodule includeIf entries removed
-    submoduleConfigContent = (
-      await fs.promises.readFile(submodule1ConfigPath)
-    ).toString()
-    expect(submoduleConfigContent.indexOf('includeIf')).toBeLessThan(0)
-    expect(submoduleConfigContent.indexOf(credentialsFilePath)).toBeLessThan(0)
-
-    // Assert credentials file deleted
-    try {
-      await fs.promises.stat(credentialsFilePath)
-      throw new Error('Credentials file should have been deleted')
-    } catch (err) {
-      if ((err as any)?.code !== 'ENOENT') {
-        throw err
-      }
-    }
-  })
-
-  const removeAuth_skipsV6CleanupWhenEnvVarSet =
-    'removeAuth skips v6 cleanup when ACTIONS_CHECKOUT_SKIP_V6_CLEANUP is set'
-  it(removeAuth_skipsV6CleanupWhenEnvVarSet, async () => {
-    // Arrange
-    await setup(removeAuth_skipsV6CleanupWhenEnvVarSet)
-
-    // Set the skip environment variable
-    process.env['ACTIONS_CHECKOUT_SKIP_V6_CLEANUP'] = '1'
-
-    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
-    await authHelper.configureAuth()
-
-    // Create v6-style credentials file in RUNNER_TEMP
-    const credentialsFileName = 'git-credentials-test-uuid-1234-5678.config'
-    const credentialsFilePath = path.join(runnerTemp, credentialsFileName)
-    const credentialsContent =
-      '[http "https://github.com/"]\n\textraheader = AUTHORIZATION: basic token\n'
-    await fs.promises.writeFile(credentialsFilePath, credentialsContent)
-
-    // Add includeIf section to local git config (separate from http.* config)
-    const includeIfSection = `\n[includeIf "gitdir:/some/path/.git/"]\n\tpath = ${credentialsFilePath}\n`
-    await fs.promises.appendFile(localGitConfigPath, includeIfSection)
-
-    // Verify v6 style config exists
-    let gitConfigContent = (
-      await fs.promises.readFile(localGitConfigPath)
-    ).toString()
-    expect(gitConfigContent.indexOf('includeIf')).toBeGreaterThanOrEqual(0)
-    await fs.promises.stat(credentialsFilePath) // Verify file exists
-
-    // Act
-    await authHelper.removeAuth()
-
-    // Assert v5 cleanup still happened (http.* removed)
-    gitConfigContent = (
-      await fs.promises.readFile(localGitConfigPath)
-    ).toString()
-    expect(
-      gitConfigContent.indexOf('http.https://github.com/.extraheader')
-    ).toBeLessThan(0)
-
-    // Assert v6 cleanup was skipped - includeIf should still be present
-    expect(gitConfigContent.indexOf('includeIf')).toBeGreaterThanOrEqual(0)
-    expect(
-      gitConfigContent.indexOf(credentialsFilePath)
-    ).toBeGreaterThanOrEqual(0)
-
-    // Assert credentials file still exists (wasn't deleted)
-    await fs.promises.stat(credentialsFilePath) // File should still exist
-
-    // Assert debug message was logged
-    expect(core.debug).toHaveBeenCalledWith(
-      'Skipping v6 style cleanup due to ACTIONS_CHECKOUT_SKIP_V6_CLEANUP'
-    )
-
-    // Cleanup
-    delete process.env['ACTIONS_CHECKOUT_SKIP_V6_CLEANUP']
   })
 
   const removeGlobalConfig_removesOverride =
@@ -992,6 +782,7 @@ async function setup(testName: string): Promise<void> {
   await fs.promises.mkdir(tempHomedir, {recursive: true})
   process.env['RUNNER_TEMP'] = runnerTemp
   process.env['HOME'] = tempHomedir
+  process.env['GITHUB_WORKSPACE'] = workspace
 
   // Create git config
   globalGitConfigPath = path.join(tempHomedir, '.gitconfig')
@@ -1010,10 +801,20 @@ async function setup(testName: string): Promise<void> {
     checkout: jest.fn(),
     checkoutDetach: jest.fn(),
     config: jest.fn(
-      async (key: string, value: string, globalConfig?: boolean) => {
+      async (
-        const configPath = globalConfig
+        key: string,
-          ? path.join(git.env['HOME'] || tempHomedir, '.gitconfig')
+        value: string,
-          : localGitConfigPath
+        globalConfig?: boolean,
+        add?: boolean,
+        configFile?: string
+      ) => {
+        const configPath =
+          configFile ||
+          (globalConfig
+            ? path.join(git.env['HOME'] || tempHomedir, '.gitconfig')
+            : localGitConfigPath)
+        // Ensure directory exists
+        await fs.promises.mkdir(path.dirname(configPath), {recursive: true})
         await fs.promises.appendFile(configPath, `\n${key} ${value}`)
       }
     ),
@@ -1073,18 +874,6 @@ async function setup(testName: string): Promise<void> {
     ),
     tryDisableAutomaticGarbageCollection: jest.fn(),
     tryGetFetchUrl: jest.fn(),
-    getSubmoduleConfigPaths: jest.fn(async () => {
-      return []
-    }),
-    tryConfigUnsetValue: jest.fn(async () => {
-      return true
-    }),
-    tryGetConfigValues: jest.fn(async () => {
-      return []
-    }),
-    tryGetConfigKeys: jest.fn(async () => {
-      return []
-    }),
     tryReset: jest.fn(),
     version: jest.fn()
   }
@@ -1119,6 +908,7 @@ async function setup(testName: string): Promise<void> {
 
 async function getActualSshKeyPath(): Promise<string> {
   let actualTempFiles = (await fs.promises.readdir(runnerTemp))
+    .filter(x => !x.startsWith('git-credentials-')) // Exclude credentials config file
     .sort()
     .map(x => path.join(runnerTemp, x))
   if (actualTempFiles.length === 0) {
@@ -1132,6 +922,7 @@ async function getActualSshKeyPath(): Promise<string> {
 
 async function getActualSshKnownHostsPath(): Promise<string> {
   let actualTempFiles = (await fs.promises.readdir(runnerTemp))
+    .filter(x => !x.startsWith('git-credentials-')) // Exclude credentials config file
     .sort()
     .map(x => path.join(runnerTemp, x))
   if (actualTempFiles.length === 0) {

__test__/git-directory-helper.test.ts

@@ -499,18 +499,6 @@ async function setup(testName: string): Promise<void> {
       await fs.promises.stat(path.join(repositoryPath, '.git'))
       return repositoryUrl
     }),
-    getSubmoduleConfigPaths: jest.fn(async () => {
-      return []
-    }),
-    tryConfigUnsetValue: jest.fn(async () => {
-      return true
-    }),
-    tryGetConfigValues: jest.fn(async () => {
-      return []
-    }),
-    tryGetConfigKeys: jest.fn(async () => {
-      return []
-    }),
     tryReset: jest.fn(async () => {
       return true
     }),

dist/index.js

@@ -162,6 +162,8 @@ class GitAuthHelper {
         this.sshKeyPath = '';
         this.sshKnownHostsPath = '';
         this.temporaryHomePath = '';
+        this.credentialsConfigPath = ''; // Path to separate credentials config file in RUNNER_TEMP
+        this.credentialsIncludeKeys = []; // Track includeIf config keys for cleanup
         this.git = gitCommandManager;
         this.settings = gitSourceSettings || {};
         // Token auth header
@@ -187,6 +189,20 @@ class GitAuthHelper {
             yield this.configureToken();
         });
     }
+    getCredentialsConfigPath() {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (this.credentialsConfigPath) {
+                return this.credentialsConfigPath;
+            }
+            const runnerTemp = process.env['RUNNER_TEMP'] || '';
+            assert.ok(runnerTemp, 'RUNNER_TEMP is not defined');
+            // Create a unique filename for this checkout instance
+            const configFileName = `git-credentials-${(0, uuid_1.v4)()}.config`;
+            this.credentialsConfigPath = path.join(runnerTemp, configFileName);
+            core.debug(`Credentials config path: ${this.credentialsConfigPath}`);
+            return this.credentialsConfigPath;
+        });
+    }
     configureTempGlobalConfig() {
         return __awaiter(this, void 0, void 0, function* () {
             var _a;
@@ -229,10 +245,10 @@ class GitAuthHelper {
     configureGlobalAuth() {
         return __awaiter(this, void 0, void 0, function* () {
             // 'configureTempGlobalConfig' noops if already set, just returns the path
-            const newGitConfigPath = yield this.configureTempGlobalConfig();
+            yield this.configureTempGlobalConfig();
             try {
                 // Configure the token
-                yield this.configureToken(newGitConfigPath, true);
+                yield this.configureToken(true);
                 // Configure HTTPS instead of SSH
                 yield this.git.tryConfigUnset(this.insteadOfKey, true);
                 if (!this.settings.sshKey) {
@@ -252,19 +268,37 @@ class GitAuthHelper {
     configureSubmoduleAuth() {
         return __awaiter(this, void 0, void 0, function* () {
             // Remove possible previous HTTPS instead of SSH
-            yield this.removeGitConfig(this.insteadOfKey, true);
+            yield this.removeSubmoduleGitConfig(this.insteadOfKey);
             if (this.settings.persistCredentials) {
-                // Configure a placeholder value. This approach avoids the credential being captured
+                // Credentials config path
-                // by process creation audit events, which are commonly logged. For more information,
+                const credentialsConfigPath = yield this.getCredentialsConfigPath();
-                // refer to https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
+                // Container credentials config path
-                const output = yield this.git.submoduleForeach(
+                const containerCredentialsPath = path.posix.join('/github/runner_temp', path.basename(credentialsConfigPath));
-                // wrap the pipeline in quotes to make sure it's handled properly by submoduleForeach, rather than just the first part of the pipeline
+                // Container repo path
-                `sh -c "git config --local '${this.tokenConfigKey}' '${this.tokenPlaceholderConfigValue}' && git config --local --show-origin --name-only --get-regexp remote.origin.url"`, this.settings.nestedSubmodules);
+                const workingDirectory = this.git.getWorkingDirectory();
-                // Replace the placeholder
+                const githubWorkspace = process.env['GITHUB_WORKSPACE'];
+                assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined');
+                let relativePath = path.relative(githubWorkspace, workingDirectory);
+                relativePath = relativePath.replace(/\\/g, '/');
+                const containerRepoPath = path.posix.join('/github/workspace', relativePath);
+                // Get submodule config file paths.
+                // Use `--show-origin` to get the config file path for each submodule.
+                const output = yield this.git.submoduleForeach(`git config --local --show-origin --name-only --get-regexp remote.origin.url`, this.settings.nestedSubmodules);
+                // Extract config file paths from the output (lines starting with "file:").
                 const configPaths = output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || [];
+                // For each submodule, configure includeIf entries pointing to the shared credentials file.
+                // Configure both host and container paths to support Docker container actions.
                 for (const configPath of configPaths) {
-                    core.debug(`Replacing token placeholder in '${configPath}'`);
+                    // The config file is at .git/modules/submodule-name/config
-                    yield this.replaceTokenPlaceholder(configPath);
+                    let submoduleConfigDir = path.dirname(configPath);
+                    submoduleConfigDir = submoduleConfigDir.replace(/\\/g, '/'); // Use forward slashes, even on Windows
+                    // Configure host includeIf
+                    yield this.git.config(`includeIf.gitdir:${submoduleConfigDir}.path`, credentialsConfigPath, false, false, configPath);
+                    // Configure container includeIf
+                    let relativeSubmoduleConfigDir = path.relative(githubWorkspace, submoduleConfigDir);
+                    relativeSubmoduleConfigDir = relativeSubmoduleConfigDir.replace(/\\/g, '/'); // Use forward slashes, even on Windows
+                    const containerSubmoduleGitDir = path.posix.join('/github/workspace', relativeSubmoduleConfigDir);
+                    yield this.git.config(`includeIf.gitdir:${containerSubmoduleGitDir}.path`, containerCredentialsPath, false, false, configPath);
                 }
                 if (this.settings.sshKey) {
                     // Configure core.sshCommand
@@ -351,20 +385,44 @@ class GitAuthHelper {
             }
         });
     }
-    configureToken(configPath, globalConfig) {
+    configureToken(globalConfig) {
         return __awaiter(this, void 0, void 0, function* () {
-            // Validate args
+            // Get the credentials config file path in RUNNER_TEMP
-            assert.ok((configPath && globalConfig) || (!configPath && !globalConfig), 'Unexpected configureToken parameter combinations');
+            const credentialsConfigPath = yield this.getCredentialsConfigPath();
-            // Default config path
+            // Write placeholder to the separate credentials config file using git config.
-            if (!configPath && !globalConfig) {
+            // This approach avoids the credential being captured by process creation audit events,
-                configPath = path.join(this.git.getWorkingDirectory(), '.git', 'config');
+            // which are commonly logged. For more information, refer to
+            // https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
+            yield this.git.config(this.tokenConfigKey, this.tokenPlaceholderConfigValue, false, false, credentialsConfigPath);
+            // Replace the placeholder in the credentials config file
+            yield this.replaceTokenPlaceholder(credentialsConfigPath);
+            // Add include or includeIf to reference the credentials config
+            if (globalConfig) {
+                // Global config file is temporary
+                yield this.git.config('include.path', credentialsConfigPath, true);
+            }
+            else {
+                // Host git directory
+                let gitDir = path.join(this.git.getWorkingDirectory(), '.git');
+                gitDir = gitDir.replace(/\\/g, '/'); // Use forward slashes, even on Windows
+                // Configure host includeIf
+                const hostIncludeKey = `includeIf.gitdir:${gitDir}.path`;
+                yield this.git.config(hostIncludeKey, credentialsConfigPath);
+                this.credentialsIncludeKeys.push(hostIncludeKey);
+                // Container git directory
+                const githubWorkspace = process.env['GITHUB_WORKSPACE'];
+                assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined');
+                const workingDirectory = this.git.getWorkingDirectory();
+                let relativePath = path.relative(githubWorkspace, workingDirectory);
+                relativePath = relativePath.replace(/\\/g, '/'); // Use forward slashes, even on Windows
+                const containerGitDir = path.posix.join('/github/workspace', relativePath, '.git');
+                // Container credentials config path
+                const containerCredentialsPath = path.posix.join('/github/runner_temp', path.basename(credentialsConfigPath));
+                // Configure container includeIf
+                const containerIncludeKey = `includeIf.gitdir:${containerGitDir}.path`;
+                yield this.git.config(containerIncludeKey, containerCredentialsPath);
+                this.credentialsIncludeKeys.push(containerIncludeKey);
             }
-            // Configure a placeholder value. This approach avoids the credential being captured
-            // by process creation audit events, which are commonly logged. For more information,
-            // refer to https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
-            yield this.git.config(this.tokenConfigKey, this.tokenPlaceholderConfigValue, globalConfig);
-            // Replace the placeholder
-            yield this.replaceTokenPlaceholder(configPath || '');
         });
     }
     replaceTokenPlaceholder(configPath) {
@@ -407,114 +465,51 @@ class GitAuthHelper {
             }
             // SSH command
             yield this.removeGitConfig(SSH_COMMAND_KEY);
+            yield this.removeSubmoduleGitConfig(SSH_COMMAND_KEY);
         });
     }
     removeToken() {
         return __awaiter(this, void 0, void 0, function* () {
-            // Remove HTTP extra header from local git config and submodule configs
+            var _a;
+            // Remove HTTP extra header
             yield this.removeGitConfig(this.tokenConfigKey);
-            //
+            yield this.removeSubmoduleGitConfig(this.tokenConfigKey);
-            // Cleanup actions/checkout@v6 style credentials
+            // Remove includeIf
-            //
+            for (const includeKey of this.credentialsIncludeKeys) {
-            const skipV6Cleanup = process.env['ACTIONS_CHECKOUT_SKIP_V6_CLEANUP'];
+                yield this.removeGitConfig(includeKey);
-            if (skipV6Cleanup === '1' || (skipV6Cleanup === null || skipV6Cleanup === void 0 ? void 0 : skipV6Cleanup.toLowerCase()) === 'true') {
-                core.debug('Skipping v6 style cleanup due to ACTIONS_CHECKOUT_SKIP_V6_CLEANUP');
-                return;
             }
-            try {
+            this.credentialsIncludeKeys = [];
-                // Collect credentials config paths that need to be removed
+            // Remove submodule includeIf
-                const credentialsPaths = new Set();
+            yield this.git.submoduleForeach(`sh -c "git config --local --get-regexp '^includeIf\\.' && git config --local --remove-section includeIf || :"`, true);
-                // Remove includeIf entries that point to git-credentials-*.config files
+            // Remove credentials config file
-                const mainCredentialsPaths = yield this.removeIncludeIfCredentials();
+            if (this.credentialsConfigPath) {
-                mainCredentialsPaths.forEach(path => credentialsPaths.add(path));
-                // Remove submodule includeIf entries that point to git-credentials-*.config files
                 try {
-                    const submoduleConfigPaths = yield this.git.getSubmoduleConfigPaths(true);
+                    yield io.rmRF(this.credentialsConfigPath);
-                    for (const configPath of submoduleConfigPaths) {
-                        const submoduleCredentialsPaths = yield this.removeIncludeIfCredentials(configPath);
-                        submoduleCredentialsPaths.forEach(path => credentialsPaths.add(path));
-                    }
                 }
                 catch (err) {
-                    core.debug(`Unable to get submodule config paths: ${err}`);
+                    core.debug(`${(_a = err === null || err === void 0 ? void 0 : err.message) !== null && _a !== void 0 ? _a : err}`);
+                    core.warning(`Failed to remove credentials config '${this.credentialsConfigPath}'`);
                 }
-                // Remove credentials config files
-                for (const credentialsPath of credentialsPaths) {
-                    // Only remove credentials config files if they are under RUNNER_TEMP
-                    const runnerTemp = process.env['RUNNER_TEMP'];
-                    if (runnerTemp && credentialsPath.startsWith(runnerTemp)) {
-                        try {
-                            yield io.rmRF(credentialsPath);
-                        }
-                        catch (err) {
-                            core.debug(`Failed to remove credentials config '${credentialsPath}': ${err}`);
-                        }
-                    }
-                }
-            }
-            catch (err) {
-                core.debug(`Failed to cleanup v6 style credentials: ${err}`);
             }
         });
     }
-    removeGitConfig(configKey_1) {
+    removeGitConfig(configKey) {
-        return __awaiter(this, arguments, void 0, function* (configKey, submoduleOnly = false) {
+        return __awaiter(this, void 0, void 0, function* () {
-            if (!submoduleOnly) {
+            if ((yield this.git.configExists(configKey)) &&
-                if ((yield this.git.configExists(configKey)) &&
+                !(yield this.git.tryConfigUnset(configKey))) {
-                    !(yield this.git.tryConfigUnset(configKey))) {
+                // Load the config contents
-                    // Load the config contents
+                core.warning(`Failed to remove '${configKey}' from the git config`);
-                    core.warning(`Failed to remove '${configKey}' from the git config`);
-                }
             }
+        });
+    }
+    removeSubmoduleGitConfig(configKey) {
+        return __awaiter(this, void 0, void 0, function* () {
             const pattern = regexpHelper.escape(configKey);
             yield this.git.submoduleForeach(
-            // wrap the pipeline in quotes to make sure it's handled properly by submoduleForeach, rather than just the first part of the pipeline
+            // Wrap the pipeline in quotes to make sure it's handled properly by submoduleForeach, rather than just the first part of the pipeline.
             `sh -c "git config --local --name-only --get-regexp '${pattern}' && git config --local --unset-all '${configKey}' || :"`, true);
         });
     }
-    /**
-     * Removes includeIf entries that point to git-credentials-*.config files.
-     * This handles cleanup of credentials configured by newer versions of the action.
-     * @param configPath Optional path to a specific git config file to operate on
-     * @returns Array of unique credentials config file paths that were found and removed
-     */
-    removeIncludeIfCredentials(configPath) {
-        return __awaiter(this, void 0, void 0, function* () {
-            const credentialsPaths = new Set();
-            try {
-                // Get all includeIf.gitdir keys
-                const keys = yield this.git.tryGetConfigKeys('^includeIf\\.gitdir:', false, // globalConfig?
-                configPath);
-                for (const key of keys) {
-                    // Get all values for this key
-                    const values = yield this.git.tryGetConfigValues(key, false, // globalConfig?
-                    configPath);
-                    if (values.length > 0) {
-                        // Remove only values that match git-credentials-<uuid>.config pattern
-                        for (const value of values) {
-                            if (this.testCredentialsConfigPath(value)) {
-                                credentialsPaths.add(value);
-                                yield this.git.tryConfigUnsetValue(key, value, false, configPath);
-                            }
-                        }
-                    }
-                }
-            }
-            catch (err) {
-                // Ignore errors - this is cleanup code
-                core.debug(`Error during includeIf cleanup${configPath ? ` for ${configPath}` : ''}: ${err}`);
-            }
-            return Array.from(credentialsPaths);
-        });
-    }
-    /**
-     * Tests if a path matches the git-credentials-*.config pattern used by newer versions.
-     * @param path The path to test
-     * @returns True if the path matches the credentials config pattern
-     */
-    testCredentialsConfigPath(path) {
-        return /git-credentials-[0-9a-f-]+\.config$/i.test(path);
-    }
 }
 
 
@@ -712,9 +707,15 @@ class GitCommandManager {
             yield this.execGit(args);
         });
     }
-    config(configKey, configValue, globalConfig, add) {
+    config(configKey, configValue, globalConfig, add, configFile) {
         return __awaiter(this, void 0, void 0, function* () {
-            const args = ['config', globalConfig ? '--global' : '--local'];
+            const args = ['config'];
+            if (configFile) {
+                args.push('--file', configFile);
+            }
+            else {
+                args.push(globalConfig ? '--global' : '--local');
+            }
             if (add) {
                 args.push('--add');
             }
@@ -791,16 +792,6 @@ class GitCommandManager {
             throw new Error('Unexpected output when retrieving default branch');
         });
     }
-    getSubmoduleConfigPaths(recursive) {
-        return __awaiter(this, void 0, void 0, function* () {
-            // Get submodule config file paths.
-            // Use `--show-origin` to get the config file path for each submodule.
-            const output = yield this.submoduleForeach(`git config --local --show-origin --name-only --get-regexp remote.origin.url`, recursive);
-            // Extract config file paths from the output (lines starting with "file:").
-            const configPaths = output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || [];
-            return configPaths;
-        });
-    }
     getWorkingDirectory() {
         return this.workingDirectory;
     }
@@ -931,20 +922,6 @@ class GitCommandManager {
             return output.exitCode === 0;
         });
     }
-    tryConfigUnsetValue(configKey, configValue, globalConfig, configFile) {
-        return __awaiter(this, void 0, void 0, function* () {
-            const args = ['config'];
-            if (configFile) {
-                args.push('--file', configFile);
-            }
-            else {
-                args.push(globalConfig ? '--global' : '--local');
-            }
-            args.push('--unset', configKey, configValue);
-            const output = yield this.execGit(args, true);
-            return output.exitCode === 0;
-        });
-    }
     tryDisableAutomaticGarbageCollection() {
         return __awaiter(this, void 0, void 0, function* () {
             const output = yield this.execGit(['config', '--local', 'gc.auto', '0'], true);
@@ -964,46 +941,6 @@ class GitCommandManager {
             return stdout;
         });
     }
-    tryGetConfigValues(configKey, globalConfig, configFile) {
-        return __awaiter(this, void 0, void 0, function* () {
-            const args = ['config'];
-            if (configFile) {
-                args.push('--file', configFile);
-            }
-            else {
-                args.push(globalConfig ? '--global' : '--local');
-            }
-            args.push('--get-all', configKey);
-            const output = yield this.execGit(args, true);
-            if (output.exitCode !== 0) {
-                return [];
-            }
-            return output.stdout
-                .trim()
-                .split('\n')
-                .filter(value => value.trim());
-        });
-    }
-    tryGetConfigKeys(pattern, globalConfig, configFile) {
-        return __awaiter(this, void 0, void 0, function* () {
-            const args = ['config'];
-            if (configFile) {
-                args.push('--file', configFile);
-            }
-            else {
-                args.push(globalConfig ? '--global' : '--local');
-            }
-            args.push('--name-only', '--get-regexp', pattern);
-            const output = yield this.execGit(args, true);
-            if (output.exitCode !== 0) {
-                return [];
-            }
-            return output.stdout
-                .trim()
-                .split('\n')
-                .filter(key => key.trim());
-        });
-    }
     tryReset() {
         return __awaiter(this, void 0, void 0, function* () {
             const output = yield this.execGit(['reset', '--hard', 'HEAD'], true);

src/git-auth-helper.ts

@@ -43,6 +43,8 @@ class GitAuthHelper {
   private sshKeyPath = ''
   private sshKnownHostsPath = ''
   private temporaryHomePath = ''
+  private credentialsConfigPath = '' // Path to separate credentials config file in RUNNER_TEMP
+  private credentialsIncludeKeys: string[] = [] // Track includeIf config keys for cleanup
 
   constructor(
     gitCommandManager: IGitCommandManager,
@@ -81,6 +83,22 @@ class GitAuthHelper {
     await this.configureToken()
   }
 
+  private async getCredentialsConfigPath(): Promise<string> {
+    if (this.credentialsConfigPath) {
+      return this.credentialsConfigPath
+    }
+
+    const runnerTemp = process.env['RUNNER_TEMP'] || ''
+    assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
+
+    // Create a unique filename for this checkout instance
+    const configFileName = `git-credentials-${uuid()}.config`
+    this.credentialsConfigPath = path.join(runnerTemp, configFileName)
+
+    core.debug(`Credentials config path: ${this.credentialsConfigPath}`)
+    return this.credentialsConfigPath
+  }
+
   async configureTempGlobalConfig(): Promise<string> {
     // Already setup global config
     if (this.temporaryHomePath?.length > 0) {
@@ -126,10 +144,10 @@ class GitAuthHelper {
 
   async configureGlobalAuth(): Promise<void> {
     // 'configureTempGlobalConfig' noops if already set, just returns the path
-    const newGitConfigPath = await this.configureTempGlobalConfig()
+    await this.configureTempGlobalConfig()
     try {
       // Configure the token
-      await this.configureToken(newGitConfigPath, true)
+      await this.configureToken(true)
 
       // Configure HTTPS instead of SSH
       await this.git.tryConfigUnset(this.insteadOfKey, true)
@@ -150,24 +168,70 @@ class GitAuthHelper {
 
   async configureSubmoduleAuth(): Promise<void> {
     // Remove possible previous HTTPS instead of SSH
-    await this.removeGitConfig(this.insteadOfKey, true)
+    await this.removeSubmoduleGitConfig(this.insteadOfKey)
 
     if (this.settings.persistCredentials) {
-      // Configure a placeholder value. This approach avoids the credential being captured
+      // Credentials config path
-      // by process creation audit events, which are commonly logged. For more information,
+      const credentialsConfigPath = await this.getCredentialsConfigPath()
-      // refer to https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
+
+      // Container credentials config path
+      const containerCredentialsPath = path.posix.join(
+        '/github/runner_temp',
+        path.basename(credentialsConfigPath)
+      )
+
+      // Container repo path
+      const workingDirectory = this.git.getWorkingDirectory()
+      const githubWorkspace = process.env['GITHUB_WORKSPACE']
+      assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined')
+      let relativePath = path.relative(githubWorkspace, workingDirectory)
+      relativePath = relativePath.replace(/\\/g, '/')
+      const containerRepoPath = path.posix.join(
+        '/github/workspace',
+        relativePath
+      )
+
+      // Get submodule config file paths.
+      // Use `--show-origin` to get the config file path for each submodule.
       const output = await this.git.submoduleForeach(
-        // wrap the pipeline in quotes to make sure it's handled properly by submoduleForeach, rather than just the first part of the pipeline
+        `git config --local --show-origin --name-only --get-regexp remote.origin.url`,
-        `sh -c "git config --local '${this.tokenConfigKey}' '${this.tokenPlaceholderConfigValue}' && git config --local --show-origin --name-only --get-regexp remote.origin.url"`,
         this.settings.nestedSubmodules
       )
 
-      // Replace the placeholder
+      // Extract config file paths from the output (lines starting with "file:").
-      const configPaths: string[] =
+      const configPaths =
         output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || []
+
+      // For each submodule, configure includeIf entries pointing to the shared credentials file.
+      // Configure both host and container paths to support Docker container actions.
       for (const configPath of configPaths) {
-        core.debug(`Replacing token placeholder in '${configPath}'`)
+        // The config file is at .git/modules/submodule-name/config
-        await this.replaceTokenPlaceholder(configPath)
+        let submoduleConfigDir = path.dirname(configPath)
+        submoduleConfigDir = submoduleConfigDir.replace(/\\/g, '/') // Use forward slashes, even on Windows
+
+        // Configure host includeIf
+        await this.git.config(
+          `includeIf.gitdir:${submoduleConfigDir}.path`,
+          credentialsConfigPath,
+          false,
+          false,
+          configPath
+        )
+
+        // Configure container includeIf
+        let relativeSubmoduleConfigDir = path.relative(githubWorkspace, submoduleConfigDir)
+        relativeSubmoduleConfigDir = relativeSubmoduleConfigDir.replace(/\\/g, '/') // Use forward slashes, even on Windows
+        const containerSubmoduleGitDir = path.posix.join(
+          '/github/workspace',
+          relativeSubmoduleConfigDir
+        )
+        await this.git.config(
+          `includeIf.gitdir:${containerSubmoduleGitDir}.path`,
+          containerCredentialsPath,
+          false,
+          false,
+          configPath
+        )
       }
 
       if (this.settings.sshKey) {
@@ -272,32 +336,62 @@ class GitAuthHelper {
     }
   }
 
-  private async configureToken(
+  private async configureToken(globalConfig?: boolean): Promise<void> {
-    configPath?: string,
+    // Get the credentials config file path in RUNNER_TEMP
-    globalConfig?: boolean
+    const credentialsConfigPath = await this.getCredentialsConfigPath()
-  ): Promise<void> {
-    // Validate args
-    assert.ok(
-      (configPath && globalConfig) || (!configPath && !globalConfig),
-      'Unexpected configureToken parameter combinations'
-    )
 
-    // Default config path
+    // Write placeholder to the separate credentials config file using git config.
-    if (!configPath && !globalConfig) {
+    // This approach avoids the credential being captured by process creation audit events,
-      configPath = path.join(this.git.getWorkingDirectory(), '.git', 'config')
+    // which are commonly logged. For more information, refer to
-    }
+    // https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
-
-    // Configure a placeholder value. This approach avoids the credential being captured
-    // by process creation audit events, which are commonly logged. For more information,
-    // refer to https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
     await this.git.config(
       this.tokenConfigKey,
       this.tokenPlaceholderConfigValue,
-      globalConfig
+      false,
+      false,
+      credentialsConfigPath
     )
 
-    // Replace the placeholder
+    // Replace the placeholder in the credentials config file
-    await this.replaceTokenPlaceholder(configPath || '')
+    await this.replaceTokenPlaceholder(credentialsConfigPath)
+
+    // Add include or includeIf to reference the credentials config
+    if (globalConfig) {
+      // Global config file is temporary
+      await this.git.config('include.path', credentialsConfigPath, true)
+    } else {
+      // Host git directory
+      let gitDir = path.join(this.git.getWorkingDirectory(), '.git')
+      gitDir = gitDir.replace(/\\/g, '/') // Use forward slashes, even on Windows
+
+      // Configure host includeIf
+      const hostIncludeKey = `includeIf.gitdir:${gitDir}.path`
+      await this.git.config(hostIncludeKey, credentialsConfigPath)
+      this.credentialsIncludeKeys.push(hostIncludeKey)
+
+      // Container git directory
+      const githubWorkspace = process.env['GITHUB_WORKSPACE']
+      assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined')
+      const workingDirectory = this.git.getWorkingDirectory()
+      let relativePath = path.relative(githubWorkspace, workingDirectory)
+      relativePath = relativePath.replace(/\\/g, '/') // Use forward slashes, even on Windows
+      const containerGitDir = path.posix.join(
+        '/github/workspace',
+        relativePath,
+        '.git'
+      )
+
+      // Container credentials config path
+      const containerCredentialsPath = path.posix.join(
+        '/github/runner_temp',
+        path.basename(credentialsConfigPath)
+      )
+
+      // Configure container includeIf
+      const containerIncludeKey = `includeIf.gitdir:${containerGitDir}.path`
+      await this.git.config(containerIncludeKey, containerCredentialsPath)
+      this.credentialsIncludeKeys.push(containerIncludeKey)
+    }
   }
 
   private async replaceTokenPlaceholder(configPath: string): Promise<void> {
@@ -343,137 +437,55 @@ class GitAuthHelper {
 
     // SSH command
     await this.removeGitConfig(SSH_COMMAND_KEY)
+    await this.removeSubmoduleGitConfig(SSH_COMMAND_KEY)
   }
 
   private async removeToken(): Promise<void> {
-    // Remove HTTP extra header from local git config and submodule configs
+    // Remove HTTP extra header
     await this.removeGitConfig(this.tokenConfigKey)
+    await this.removeSubmoduleGitConfig(this.tokenConfigKey)
 
-    //
+    // Remove includeIf
-    // Cleanup actions/checkout@v6 style credentials
+    for (const includeKey of this.credentialsIncludeKeys) {
-    //
+      await this.removeGitConfig(includeKey)
-    const skipV6Cleanup = process.env['ACTIONS_CHECKOUT_SKIP_V6_CLEANUP']
-    if (skipV6Cleanup === '1' || skipV6Cleanup?.toLowerCase() === 'true') {
-      core.debug(
-        'Skipping v6 style cleanup due to ACTIONS_CHECKOUT_SKIP_V6_CLEANUP'
-      )
-      return
     }
+    this.credentialsIncludeKeys = []
 
-    try {
+    // Remove submodule includeIf
-      // Collect credentials config paths that need to be removed
+    await this.git.submoduleForeach(
-      const credentialsPaths = new Set<string>()
+      `sh -c "git config --local --get-regexp '^includeIf\\.' && git config --local --remove-section includeIf || :"`,
+      true
+    )
 
-      // Remove includeIf entries that point to git-credentials-*.config files
+    // Remove credentials config file
-      const mainCredentialsPaths = await this.removeIncludeIfCredentials()
+    if (this.credentialsConfigPath) {
-      mainCredentialsPaths.forEach(path => credentialsPaths.add(path))
-
-      // Remove submodule includeIf entries that point to git-credentials-*.config files
       try {
-        const submoduleConfigPaths =
+        await io.rmRF(this.credentialsConfigPath)
-          await this.git.getSubmoduleConfigPaths(true)
-        for (const configPath of submoduleConfigPaths) {
-          const submoduleCredentialsPaths =
-            await this.removeIncludeIfCredentials(configPath)
-          submoduleCredentialsPaths.forEach(path => credentialsPaths.add(path))
-        }
       } catch (err) {
-        core.debug(`Unable to get submodule config paths: ${err}`)
+        core.debug(`${(err as any)?.message ?? err}`)
+        core.warning(
+          `Failed to remove credentials config '${this.credentialsConfigPath}'`
+        )
       }
-
-      // Remove credentials config files
-      for (const credentialsPath of credentialsPaths) {
-        // Only remove credentials config files if they are under RUNNER_TEMP
-        const runnerTemp = process.env['RUNNER_TEMP']
-        if (runnerTemp && credentialsPath.startsWith(runnerTemp)) {
-          try {
-            await io.rmRF(credentialsPath)
-          } catch (err) {
-            core.debug(
-              `Failed to remove credentials config '${credentialsPath}': ${err}`
-            )
-          }
-        }
-      }
-    } catch (err) {
-      core.debug(`Failed to cleanup v6 style credentials: ${err}`)
     }
   }
 
-  private async removeGitConfig(
+  private async removeGitConfig(configKey: string): Promise<void> {
-    configKey: string,
+    if (
-    submoduleOnly: boolean = false
+      (await this.git.configExists(configKey)) &&
-  ): Promise<void> {
+      !(await this.git.tryConfigUnset(configKey))
-    if (!submoduleOnly) {
+    ) {
-      if (
+      // Load the config contents
-        (await this.git.configExists(configKey)) &&
+      core.warning(`Failed to remove '${configKey}' from the git config`)
-        !(await this.git.tryConfigUnset(configKey))
-      ) {
-        // Load the config contents
-        core.warning(`Failed to remove '${configKey}' from the git config`)
-      }
     }
+  }
 
+  private async removeSubmoduleGitConfig(configKey: string): Promise<void> {
     const pattern = regexpHelper.escape(configKey)
     await this.git.submoduleForeach(
-      // wrap the pipeline in quotes to make sure it's handled properly by submoduleForeach, rather than just the first part of the pipeline
+      // Wrap the pipeline in quotes to make sure it's handled properly by submoduleForeach, rather than just the first part of the pipeline.
       `sh -c "git config --local --name-only --get-regexp '${pattern}' && git config --local --unset-all '${configKey}' || :"`,
       true
     )
   }
-
-  /**
-   * Removes includeIf entries that point to git-credentials-*.config files.
-   * This handles cleanup of credentials configured by newer versions of the action.
-   * @param configPath Optional path to a specific git config file to operate on
-   * @returns Array of unique credentials config file paths that were found and removed
-   */
-  private async removeIncludeIfCredentials(
-    configPath?: string
-  ): Promise<string[]> {
-    const credentialsPaths = new Set<string>()
-
-    try {
-      // Get all includeIf.gitdir keys
-      const keys = await this.git.tryGetConfigKeys(
-        '^includeIf\\.gitdir:',
-        false, // globalConfig?
-        configPath
-      )
-
-      for (const key of keys) {
-        // Get all values for this key
-        const values = await this.git.tryGetConfigValues(
-          key,
-          false, // globalConfig?
-          configPath
-        )
-        if (values.length > 0) {
-          // Remove only values that match git-credentials-<uuid>.config pattern
-          for (const value of values) {
-            if (this.testCredentialsConfigPath(value)) {
-              credentialsPaths.add(value)
-              await this.git.tryConfigUnsetValue(key, value, false, configPath)
-            }
-          }
-        }
-      }
-    } catch (err) {
-      // Ignore errors - this is cleanup code
-      core.debug(
-        `Error during includeIf cleanup${configPath ? ` for ${configPath}` : ''}: ${err}`
-      )
-    }
-
-    return Array.from(credentialsPaths)
-  }
-
-  /**
-   * Tests if a path matches the git-credentials-*.config pattern used by newer versions.
-   * @param path The path to test
-   * @returns True if the path matches the credentials config pattern
-   */
-  private testCredentialsConfigPath(path: string): boolean {
-    return /git-credentials-[0-9a-f-]+\.config$/i.test(path)
-  }
 }

src/git-command-manager.ts

@@ -28,7 +28,8 @@ export interface IGitCommandManager {
     configKey: string,
     configValue: string,
     globalConfig?: boolean,
-    add?: boolean
+    add?: boolean,
+    configFile?: string
   ): Promise<void>
   configExists(configKey: string, globalConfig?: boolean): Promise<boolean>
   fetch(
@@ -41,7 +42,6 @@ export interface IGitCommandManager {
     }
   ): Promise<void>
   getDefaultBranch(repositoryUrl: string): Promise<string>
-  getSubmoduleConfigPaths(recursive: boolean): Promise<string[]>
   getWorkingDirectory(): string
   init(): Promise<void>
   isDetached(): Promise<boolean>
@@ -60,24 +60,8 @@ export interface IGitCommandManager {
   tagExists(pattern: string): Promise<boolean>
   tryClean(): Promise<boolean>
   tryConfigUnset(configKey: string, globalConfig?: boolean): Promise<boolean>
-  tryConfigUnsetValue(
-    configKey: string,
-    configValue: string,
-    globalConfig?: boolean,
-    configFile?: string
-  ): Promise<boolean>
   tryDisableAutomaticGarbageCollection(): Promise<boolean>
   tryGetFetchUrl(): Promise<string>
-  tryGetConfigValues(
-    configKey: string,
-    globalConfig?: boolean,
-    configFile?: string
-  ): Promise<string[]>
-  tryGetConfigKeys(
-    pattern: string,
-    globalConfig?: boolean,
-    configFile?: string
-  ): Promise<string[]>
   tryReset(): Promise<boolean>
   version(): Promise<GitVersion>
 }
@@ -240,9 +224,15 @@ class GitCommandManager {
     configKey: string,
     configValue: string,
     globalConfig?: boolean,
-    add?: boolean
+    add?: boolean,
+    configFile?: string
   ): Promise<void> {
-    const args: string[] = ['config', globalConfig ? '--global' : '--local']
+    const args: string[] = ['config']
+    if (configFile) {
+      args.push('--file', configFile)
+    } else {
+      args.push(globalConfig ? '--global' : '--local')
+    }
     if (add) {
       args.push('--add')
     }
@@ -340,21 +330,6 @@ class GitCommandManager {
     throw new Error('Unexpected output when retrieving default branch')
   }
 
-  async getSubmoduleConfigPaths(recursive: boolean): Promise<string[]> {
-    // Get submodule config file paths.
-    // Use `--show-origin` to get the config file path for each submodule.
-    const output = await this.submoduleForeach(
-      `git config --local --show-origin --name-only --get-regexp remote.origin.url`,
-      recursive
-    )
-
-    // Extract config file paths from the output (lines starting with "file:").
-    const configPaths =
-      output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || []
-
-    return configPaths
-  }
-
   getWorkingDirectory(): string {
     return this.workingDirectory
   }
@@ -487,24 +462,6 @@ class GitCommandManager {
     return output.exitCode === 0
   }
 
-  async tryConfigUnsetValue(
-    configKey: string,
-    configValue: string,
-    globalConfig?: boolean,
-    configFile?: string
-  ): Promise<boolean> {
-    const args = ['config']
-    if (configFile) {
-      args.push('--file', configFile)
-    } else {
-      args.push(globalConfig ? '--global' : '--local')
-    }
-    args.push('--unset', configKey, configValue)
-
-    const output = await this.execGit(args, true)
-    return output.exitCode === 0
-  }
-
   async tryDisableAutomaticGarbageCollection(): Promise<boolean> {
     const output = await this.execGit(
       ['config', '--local', 'gc.auto', '0'],
@@ -531,56 +488,6 @@ class GitCommandManager {
     return stdout
   }
 
-  async tryGetConfigValues(
-    configKey: string,
-    globalConfig?: boolean,
-    configFile?: string
-  ): Promise<string[]> {
-    const args = ['config']
-    if (configFile) {
-      args.push('--file', configFile)
-    } else {
-      args.push(globalConfig ? '--global' : '--local')
-    }
-    args.push('--get-all', configKey)
-
-    const output = await this.execGit(args, true)
-
-    if (output.exitCode !== 0) {
-      return []
-    }
-
-    return output.stdout
-      .trim()
-      .split('\n')
-      .filter(value => value.trim())
-  }
-
-  async tryGetConfigKeys(
-    pattern: string,
-    globalConfig?: boolean,
-    configFile?: string
-  ): Promise<string[]> {
-    const args = ['config']
-    if (configFile) {
-      args.push('--file', configFile)
-    } else {
-      args.push(globalConfig ? '--global' : '--local')
-    }
-    args.push('--name-only', '--get-regexp', pattern)
-
-    const output = await this.execGit(args, true)
-
-    if (output.exitCode !== 0) {
-      return []
-    }
-
-    return output.stdout
-      .trim()
-      .split('\n')
-      .filter(key => key.trim())
-  }
-
   async tryReset(): Promise<boolean> {
     const output = await this.execGit(['reset', '--hard', 'HEAD'], true)
     return output.exitCode === 0