如何从git镜像克隆中排除拉请求？

Question

我想将Bitbucket存储库镜像为另一个Bitbucket存储库。我使用一个shell脚本来管理它，它执行以下操作：

git clone --mirror <sourceUrl>
git remote set-url --push origin <targetUrl>
git push --mirror

现在，我在推送时得到了以下错误，因为Bitbucket不允许推送拉请求(源Bitbucket上创建的请求)：

remote: You are attempting to update refs that are reserved for Bitbucket's pull
remote: request functionality. Bitbucket manages these refs automatically, and they may
remote: not be updated by users.
remote:
remote: Rejected refs:
remote:         refs/pull-requests/21/from
remote:         refs/pull-requests/23/from
remote:         refs/pull-requests/23/merge
remote:         refs/pull-requests/24/from
remote:         refs/pull-requests/24/merge
To ...
 ! [remote rejected] refs/pull-requests/21/from -> refs/pull-requests/21/from (pre-receive hook declined)
 ! [remote rejected] refs/pull-requests/23/from -> refs/pull-requests/23/from (pre-receive hook declined)
 ! [remote rejected] refs/pull-requests/23/merge -> refs/pull-requests/23/merge (pre-receive hook declined)
 ! [remote rejected] refs/pull-requests/24/from -> refs/pull-requests/24/from (pre-receive hook declined)
 ! [remote rejected] refs/pull-requests/24/merge -> refs/pull-requests/24/merge (pre-receive hook declined)
error: failed to push some refs to '...'

通过使用下面的解决方法，我用http://christoph.ruegg.name/blog/git-howto-mirror-a-github-repository-without-pull-refs.html的提示解决了这个问题。

我创建了一个新的bare存储库，并以以下方式调整了配置：

[core]
    repositoryformatversion = 0
    filemode = true
    bare = true
[remote "origin"]
    fetch = +refs/heads/*:refs/heads/*
    fetch = +refs/tags/*:refs/tags/*
    url = <sourceUrl>
    mirror = true
    pushurl = <targetUrl>

然后我执行吉特拉和吉特推，一切都很好。

尽管如此，解决方法并不是一个漂亮的解决方案，因为创建一个空的裸存储库，然后覆盖它是很奇怪的，所以我想要一个替代方案。

问题：

• 我可以使用"git克隆-配置“添加所需的获取配置(在git克隆执行它的初始提取之前)，但是我可以使用"git克隆”命令删除原始的fetch = +refs/*:refs/*配置吗？这将解决问题，即最初的拉请求是被拉出的。
• 是否有可能在拉完后从裸存储库中删除拉请求？
• 是否可以将拉请求排除在推送之外？

Answer 1

多亏了伊凡。

他的命令解决了我的问题。我只需将"-r“参数添加到xargs中，就可以对空grep做出反应：

git show-ref | cut -d' ' -f2 | grep 'pull-request' | xargs -r -L1 git update-ref -d