添加一个参数 `workflow_dispatch`,这样子就可以指定某条分支进行构建了 例子如下: ``` name: Build on: workflow_dispatch: push: branches: - master jobs: build: runs-on: ubuntu-20.04 steps: - name: Checkout code uses: actions/checkout@v2 with: fetch-depth: 0 ``` 这样子就可以在 Actions 中看到选项了  更多配置可以查看 Github 文档 * [https://github.blog/changelog/2020-07-06-github-actions-manual-triggers-with-workflow_dispatch/](https://github.blog/changelog/2020-07-06-github-actions-manual-triggers-with-workflow_dispatch/) * [https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#inputs](https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions#inputs)