Function fetch

lib/git.js:106–136

(repositoryUrl, branch, ciBranch, execaOptions)

 * @param {Object} [execaOpts] Options to pass to `execa`.
 */
export async function fetch(repositoryUrl, branch, ciBranch, execaOptions) {
  const isDetachedHead =
    (await execa("git", ["rev-parse", "--abbrev-ref", "HEAD"], { ...execaOptions, reject: false })).stdout === "HEAD";

  try {
    await execa(
      "git",
      [
        "fetch",
        "--unshallow",
        "--tags",
        ...(branch === ciBranch && !isDetachedHead
          ? [repositoryUrl]
          : ["--update-head-ok", repositoryUrl, `+refs/heads/${branch}:refs/heads/${branch}`]),
      ],
      execaOptions
    );
  } catch {
    await execa(
      "git",
      [
        "fetch",
        "--tags",
        ...(branch === ciBranch && !isDetachedHead
          ? [repositoryUrl]
          : ["--update-head-ok", repositoryUrl, `+refs/heads/${branch}:refs/heads/${branch}`]),
      ],
      execaOptions
    );
  }
}

/**
 * Unshallow the git repository if necessary and fetch all the notes.