remove: unused code

src/commitSha.ts

@@ -326,7 +326,6 @@ interface SHAForPullRequestEvent {
   hasSubmodule: boolean
   gitFetchExtraArgs: string[]
   remoteName: string
-  isFork: boolean
 }
 
 export const getSHAForPullRequestEvent = async ({
@@ -335,8 +334,7 @@ export const getSHAForPullRequestEvent = async ({
   isShallow,
   hasSubmodule,
   gitFetchExtraArgs,
-  remoteName,
-  isFork
+  remoteName
 }: SHAForPullRequestEvent): Promise<DiffResult> => {
   let targetBranch = github.context.payload.pull_request?.base?.ref
   const currentBranch = github.context.payload.pull_request?.head?.ref
@@ -507,18 +505,14 @@ export const getSHAForPullRequestEvent = async ({
         }
       }
     } else {
-      if (github.context.payload.action === 'closed' || isFork) {
-        previousSha = github.context.payload.pull_request?.base?.sha
-      } else {
+      previousSha = github.context.payload.pull_request?.base?.sha
+
+      if (!previousSha) {
         previousSha = await getRemoteBranchHeadSha({
           cwd: workingDirectory,
-          branch: targetBranch,
-          remoteName
+          remoteName,
+          branch: targetBranch
         })
-
-        if (!previousSha) {
-          previousSha = github.context.payload.pull_request?.base?.sha
-        }
       }
 
       if (isShallow) {

src/main.ts

@@ -23,7 +23,6 @@ import {
   hasLocalGitDirectory,
   isRepoShallow,
   recoverDeletedFiles,
-  setForkRemote,
   setOutput,
   submoduleExists,
   updateGitGlobalConfig,
@@ -73,8 +72,7 @@ const getChangedFilesFromLocalGitHistory = async ({
   }
 
   const isTag = env.GITHUB_REF?.startsWith('refs/tags/')
-  const isFork = github.context.payload.pull_request?.head.repo.fork || false
-  let remoteName = 'origin'
+  const remoteName = 'origin'
   const outputRenamedFilesAsDeletedAndAdded =
     inputs.outputRenamedFilesAsDeletedAndAdded
   let submodulePaths: string[] = []
@@ -87,10 +85,6 @@ const getChangedFilesFromLocalGitHistory = async ({
     gitFetchExtraArgs = ['--prune', '--no-recurse-submodules']
   }
 
-  if (isFork) {
-    remoteName = await setForkRemote({cwd: workingDirectory})
-  }
-
   let diffResult: DiffResult
 
   if (!github.context.payload.pull_request?.base?.ref) {
@@ -117,8 +111,7 @@ const getChangedFilesFromLocalGitHistory = async ({
       isShallow,
       hasSubmodule,
       gitFetchExtraArgs,
-      remoteName,
-      isFork
+      remoteName
     })
   }
 

src/utils.ts

@@ -744,47 +744,6 @@ export const getParentSha = async ({cwd}: {cwd: string}): Promise<string> => {
   return stdout.trim()
 }
 
-const remoteExists = async (
-  cwd: string,
-  remoteName: string
-): Promise<boolean> => {
-  const {exitCode} = await exec.getExecOutput(
-    'git',
-    ['remote', 'get-url', remoteName],
-    {
-      cwd,
-      ignoreReturnCode: true,
-      silent: !core.isDebug()
-    }
-  )
-
-  return exitCode === 0
-}
-
-export const setForkRemote = async ({cwd}: {cwd: string}): Promise<string> => {
-  const remoteName = 'changed-files-fork'
-
-  const remoteFound = await remoteExists(cwd, remoteName)
-
-  if (!remoteFound) {
-    await exec.getExecOutput(
-      'git',
-      [
-        'remote',
-        'add',
-        remoteName,
-        github.context.payload.repository?.clone_url
-      ],
-      {
-        cwd,
-        silent: !core.isDebug()
-      }
-    )
-  }
-
-  return remoteName
-}
-
 export const verifyCommitSha = async ({
   sha,
   cwd,