Function fetchFromOrigin

src/utils/teleport.tsx:187–209

* Fetches a specific branch from remote origin * @param branch The branch to fetch. If not specified, fetches all branches.

(branch?: string)

 * @param branch The branch to fetch. If not specified, fetches all branches.
 */
async function fetchFromOrigin(branch?: string): Promise<void> {
  const fetchArgs = branch ? ['fetch', 'origin', `${branch}:${branch}`] : ['fetch', 'origin'];
  const {
    code: fetchCode,
    stderr: fetchStderr
  } = await execFileNoThrow(gitExe(), fetchArgs);
  if (fetchCode !== 0) {
    // If fetching a specific branch fails, it might not exist locally yet
    // Try fetching just the ref without mapping to local branch
    if (branch && fetchStderr.includes('refspec')) {
      logForDebugging(`Specific branch fetch failed, trying to fetch ref: ${branch}`);
      const {
        code: refFetchCode,
        stderr: refFetchStderr
      } = await execFileNoThrow(gitExe(), ['fetch', 'origin', branch]);
      if (refFetchCode !== 0) {
        logError(new Error(`Failed to fetch from remote origin: ${refFetchStderr}`));
      }
    } else {
      logError(new Error(`Failed to fetch from remote origin: ${fetchStderr}`));
    }
  }
}

/**
 * Ensures that the current branch has an upstream set