Add objectFormat setting to allow init()ing a repo with sha256

src/git-command-manager.ts

@@ -42,7 +42,7 @@ export interface IGitCommandManager {
   ): Promise<void>
   getDefaultBranch(repositoryUrl: string): Promise<string>
   getWorkingDirectory(): string
-  init(): Promise<void>
+  init(options?: { objectFormat?: string }): Promise<void>
   isDetached(): Promise<boolean>
   lfsFetch(ref: string): Promise<void>
   lfsInstall(): Promise<void>
@@ -327,8 +327,12 @@ class GitCommandManager {
     return this.workingDirectory
   }
 
-  async init(): Promise<void> {
-    await this.execGit(['init', this.workingDirectory])
+  async init(options?: { objectFormat?: string }): Promise<void> {
+    await this.execGit([
+      'init',
+      ...(options?.objectFormat ? [`--object-format=${options.objectFormat}`] : []),
+      this.workingDirectory
+    ])
   }
 
   async isDetached(): Promise<boolean> {

src/git-source-provider.ts

@@ -110,7 +110,7 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
       !fsHelper.directoryExistsSync(path.join(settings.repositoryPath, '.git'))
     ) {
       core.startGroup('Initializing the repository')
-      await git.init()
+      await git.init({ objectFormat: settings.objectFormat })
       await git.remoteAdd('origin', repositoryUrl)
       core.endGroup()
     }

src/git-source-settings.ts

@@ -118,4 +118,9 @@ export interface IGitSourceSettings {
    * User override on the GitHub Server/Host URL that hosts the repository to be cloned
    */
   githubServerUrl: string | undefined
+
+  /**
+   * Object format used for the repo, if it is not default
+   */
+  objectFormat: 'sha1' | 'sha256' | undefined
 }

src/input-helper.ts

@@ -161,5 +161,14 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   result.githubServerUrl = core.getInput('github-server-url')
   core.debug(`GitHub Host URL = ${result.githubServerUrl}`)
 
+  // Object format
+  const objectFormat = core.getInput('object-format')
+  if (objectFormat) {
+    if (objectFormat != 'sha1' && objectFormat != 'sha256') {
+      throw Error(`Invalid object format '${objectFormat}'`)
+    }
+    result.objectFormat = objectFormat
+  }
+
   return result
 }