如果您在仓库中实施了分支保护，便可设置必需提交签名。 更多信息请参阅“配置受保护分支”。
When you enable required commit signing on a branch, contibutors and bots can only push commits that have been signed and verified to the branch. 更多信息请参阅“关于提交签名验证”。
如果提交已进行签名和验证，则始终可以将本地提交推送到分支。 You can also merge signed and verified commits into the branch using a pull request on GitHub. However, you cannot squash and merge a pull request into the branch on GitHub unless you are the author of the pull request. You can squash and merge pull requests locally. For more information, see "Checking out pull requests locally." For more information about merge methods, see "About merge methods on GitHub."
注：对分支启用必需提交签名将会增加参与的难度。 如果协作者推送未签名的提交到启用了必需提交签名的分支，他们将需要变基其提交以包含验证的签名，并且强制推送重写的提交到分支。
仓库管理员可以推送尚未签名和验证的本地提交，但您可以要求管理员遵守必需提交签名。 更多信息请参阅“启用必需提交签名”。
延伸阅读
- "关于受保护分支"