diff --git a/lib/util/git/index.ts b/lib/util/git/index.ts
index bc27895b7fb53ff6ab776e9a3da4bf8b124ba56f..ecfd40abc4d88edf1ef42b85743b92cc2a4e61eb 100644
--- a/lib/util/git/index.ts
+++ b/lib/util/git/index.ts
@@ -393,7 +393,7 @@ export async function checkoutBranch(branchName: string): Promise<CommitSha> {
   try {
     config.currentBranch = branchName;
     config.currentBranchSha = (
-      await git.raw(['rev-parse', 'origin/' + branchName])
+      await git.raw(['rev-parse', 'origin/' + branchName, '--'])
     ).trim();
     await git.checkout([branchName, '-f']);
     const latestCommitDate = (await git.log({ n: 1 }))?.latest?.date;