dist/index.js

@@ -1574,9 +1574,7 @@ function downloadRepository(authToken, owner, repo, ref, commit, repositoryPath,
         // Write archive to disk
         core.info('Writing archive to disk');
         const uniqueId = (0, uuid_1.v4)();
-        const archivePath = IS_WINDOWS
-            ? path.join(repositoryPath, `${uniqueId}.zip`)
-            : path.join(repositoryPath, `${uniqueId}.tar.gz`);
+        const archivePath = path.join(repositoryPath, `${uniqueId}.tar.gz`);
         yield fs.promises.writeFile(archivePath, archiveData);
         archiveData = Buffer.from(''); // Free memory
         // Extract archive

src/github-api-helper.ts

@@ -35,9 +35,7 @@ export async function downloadRepository(
   // Write archive to disk
   core.info('Writing archive to disk')
   const uniqueId = uuid()
-  const archivePath = IS_WINDOWS
-    ? path.join(repositoryPath, `${uniqueId}.zip`)
-    : path.join(repositoryPath, `${uniqueId}.tar.gz`)
+  const archivePath = path.join(repositoryPath, `${uniqueId}.tar.gz`)
   await fs.promises.writeFile(archivePath, archiveData)
   archiveData = Buffer.from('') // Free memory