LMLPHP后院

扫码查看  原文链接 : https://blog.lmlphp.com/archives/313/GIT_filter-branch_modify_the_author_information  来自 : LMLPHP后院

有朋友问我，怎么修改 git 提交过的且已推送到服务器的 commit 作者信息？

这个问题？答案从严格上来讲，是不可以的。仅仅就修改而言，有些情况下是可以修改的，如果软件打过 tag，或者提交的时候签名了，就修改不了。有些情况下可以修改，其实是不建议这么做的，特别是团队开发的时候。因为一个提交一旦推送到远程，就可以假定一定有人下载到他的本地仓库，你这一修改，hash 值就一定改变，其他人更新就会冲突，在团队水平不一致的时候，是个大坑。

摘录一部分官方给出的解释：

The --env-filter option can be used to modify committer and/or author identity. For example, if you found out that your commits have the wrong identity due to a misconfigured user.email, you can make a correction, before publishing the project, like this:

git filter-branch --env-filter '
	if test "$GIT_AUTHOR_EMAIL" = "root@localhost"
	then
		GIT_AUTHOR_EMAIL=john@example.com
		export GIT_AUTHOR_EMAIL
	fi
	if test "$GIT_COMMITTER_EMAIL" = "root@localhost"
	then
		GIT_COMMITTER_EMAIL=john@example.com
		export GIT_COMMITTER_EMAIL
	fi
' -- --all

尝试了一下，修改作者邮箱：

git filter-branch --env-filter '
        if test "$GIT_AUTHOR_EMAIL" = "may@localhost.localdomain"
        then
                GIT_AUTHOR_EMAIL=rhett@126.com
                export GIT_AUTHOR_EMAIL
        fi
' -- --all

运行结果如下：

Rewrite fba1923870630f9f4e289a20a3ff4788916fe535 (167/180) (6 seconds passed, remaining 0 predicted)    
Ref 'refs/heads/dev' was rewritten
Ref 'refs/heads/master' was rewritten
Ref 'refs/remotes/origin/master' was rewritten
Ref 'refs/remotes/origin/dev' was rewritten
WARNING: Ref 'refs/remotes/origin/master' is unchanged
WARNING: Ref 'refs/tags/v1.0.0' is unchanged
WARNING: Ref 'refs/tags/v1.0.1' is unchanged
WARNING: Ref 'refs/tags/v1.0.2' is unchanged
WARNING: Ref 'refs/tags/v1.0.3' is unchanged
WARNING: Ref 'refs/tags/v1.0.4' is unchanged
WARNING: Ref 'refs/tags/v1.0.5' is unchanged
WARNING: Ref 'refs/tags/v1.0.6' is unchanged
WARNING: Ref 'refs/tags/v1.0.7' is unchanged
WARNING: Ref 'refs/tags/v1.0.8' is unchanged
WARNING: Ref 'refs/tags/v1.0.9' is unchanged
WARNING: Ref 'refs/tags/v1.1.0' is unchanged
WARNING: Ref 'refs/tags/v1.1.1' is unchanged
WARNING: Ref 'refs/tags/v1.1.2' is unchanged
WARNING: Ref 'refs/tags/v1.1.3' is unchanged
WARNING: Ref 'refs/tags/v1.1.4' is unchanged
WARNING: Ref 'refs/tags/v1.1.5' is unchanged
WARNING: Ref 'refs/tags/v1.1.6' is unchanged
WARNING: Ref 'refs/tags/v1.1.7' is unchanged
Ref 'refs/tags/v1.1.8' was rewritten
WARNING: You said to rewrite tagged commits, but not the corresponding tag.
WARNING: Perhaps use '--tag-name-filter cat' to rewrite the tag.

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