Function _pushHeadToFork

ng-dev/release/publish/actions.ts:318–340

* Pushes the current Git `HEAD` to a fork for the configured project that is owned by * the authenticated user. If the specified branch name exists in the fork already, a * unique one will be generated based on the proposed name to avoid collisions. * @param proposedBranchName Proposed bran

(
    proposedBranchName: string,
    trackLocalBranch: boolean,
  )

   * @returns The fork and branch name containing the pushed changes.
   */
  private async _pushHeadToFork(
    proposedBranchName: string,
    trackLocalBranch: boolean,
  ): Promise<{fork: GithubRepo; branchName: string}> {
    const fork = await this._getForkOfAuthenticatedUser();
    // Compute a repository URL for pushing to the fork. Note that we want to respect
    // the SSH option from the dev-infra github configuration.
    const repoGitUrl = getRepositoryGitUrl(
      {...fork, useSsh: this.git.remoteConfig.useSsh},
      this.git.githubToken,
    );
    const branchName = await this._findAvailableBranchName(fork, proposedBranchName);
    const pushArgs: string[] = [];
    // If a local branch should track the remote fork branch, create a branch matching
    // the remote branch. Later with the `git push`, the remote is set for the branch.
    if (trackLocalBranch) {
      await this.createLocalBranchFromHead(branchName);
      pushArgs.push('--set-upstream');
    }
    // Push the local `HEAD` to the remote branch in the fork.
    this.git.run(['push', '-q', repoGitUrl, `HEAD:refs/heads/${branchName}`, ...pushArgs]);
    return {fork, branchName};
  }

  /**
   * Pushes changes to a fork for the configured project that is owned by the currently