message: Put special characters in quotes for better compatibility.
diff: @@ -260,7 +260,7 @@ export async function getBaselineCommits(client, { branch, ignoreLastBuildOnBran
  export async function isUpToDate() {
  execGitCommand(`git remote update`);
  const localCommit = await execGitCommand('git rev-parse HEAD');
  - const remoteCommit = await execGitCommand('git rev-parse @{u}');
  + const remoteCommit = await execGitCommand("git rev-parse '@{upstream}'");
  if (!localCommit) {
  throw new Error('Failed to retrieve last local commit hash');
  }
  