git 修改commit信息

（1）如果是最近的一次commit，直接使用git commit --amend命令，使用这个命令之后，会跳出文本编辑器，直接编辑commit信息即可

（2）如果需要修改前面某次的commit，就相对比较麻烦，但也有方法：

如果要修改历史的版本信息(非最新一条),会稍稍麻烦一点,不过也可以搞定,这里用到的方法就是 git命令的重写历史功能.

• 假定我们现在的提交信息是这样的

$ git log
commit 9ac1179332670365a3e5ea00a6486998eb66db7a (HEAD -> fix_aop_no_class_defined, origin/fix_aop_no_class_defined)
Author: candyleer <295198088@qq.com>
Date:   Mon Apr 16 19:58:23 2018 +0800

    update test case

    Signed-off-by: candyleer <295198088@qq.com>

commit 223fc80d17273b19238dcb648e6d6eefc579de0f
Author: candyleer <295198088@qq.com>
Date:   Mon Apr 16 18:47:50 2018 +0800

    unit test case

    Signed-off-by: candyleer <295198088@qq.com>

commit 2275781a0d75add037721832bd68c1a8edb3813e
Author: candyleer <295198088@qq.com>
Date:   Mon Apr 16 18:29:29 2018 +0800

    should find method from parent

一共有三条历史提交信息,第 二三条都已经加上了 DCO 信息,现在想在第一条(最老的一条)的提交信息上面也加上的话.我们可以按照上述文档操作:

• 执行 git 命令, 修改近三次的信息

$ git rebase -i HEAD~3

将会得到如下的信息,这里的提交日志是和git log倒叙排列的,我们要修改的日志信息位于第一位.

1 pick 2275781 should find method from parent
  2 pick 223fc80 unit test case
  3 pick 9ac1179 update test case
  4
  5 # Rebase 79db0bd..9ac1179 onto 79db0bd (3 commands)
  6 #
  7 # Commands:
  8 # p, pick = use commit
  9 # r, reword = use commit, but edit the commit message
 10 # e, edit = use commit, but stop for amending
 11 # s, squash = use commit, but meld into previous commit
 12 # f, fixup = like "squash", but discard this commit's log message
 13 # x, exec = run command (the rest of the line) using shell
 14 # d, drop = remove commit
 15 #
 16 # These lines can be re-ordered; they are executed from top to bottom.
 17 #
 18 # If you remove a line here THAT COMMIT WILL BE LOST.
 19 #
 20 # However, if you remove everything, the rebase will be aborted.
 21 #
 22 # Note that empty commits are commented out

我们现在要修改修改要should find method from parent这条日志,那么修改的日志为,将第一个pick 修改为edit, 然后 :wq 退出.

  1 edit 2275781 should find method from parent
  2 pick 223fc80 unit test case
  3 pick 9ac1179 update test case

将会看到如下信息,意思就是如果要改日志,执行git commit --amend,如果修改完成后,执行git rebase --continue

client_java git:(fix_aop_no_class_defined) git rebase -i HEAD~3
Stopped at 2275781...  should find method from parent
You can amend the commit now, with

  git commit --amend

Once you are satisfied with your changes, run

  git rebase --continue
?  client_java git:(2275781)

正式修改,执行命令,-s 就是自动加上Signed-off-by:

$ git commit --amend -s 

client_java git:(63b2cfd) git commit --amend -s
[detached HEAD c46b30e] 1should find method from parent
 Date: Mon Apr 16 18:29:29 2018 +0800
 1 file changed, 4 insertions(+), 1 deletion(-

修改完成后,:wq 退出,然后完成此次 log 的rebase

$ git rebase --continue

client_java git:(c46b30e) git rebase --continue
Successfully rebased and updated refs/heads/fix_aop_no_class_defined.

这样本地修改就完成啦,用git log 再看下:

commit 449efc747ffb85567667745b978ed7e3418cfe27 (HEAD -> fix_aop_no_class_defined)
Author: candyleer <295198088@qq.com>
Date:   Mon Apr 16 19:58:23 2018 +0800

    update test case

    Signed-off-by: candyleer <295198088@qq.com>

commit 69237c0bd48439ea0d8b87bf2c7c7ac4786c66d4
Author: candyleer <295198088@qq.com>
Date:   Mon Apr 16 18:47:50 2018 +0800

    unit test case

    Signed-off-by: candyleer <295198088@qq.com>

commit c46b30e456af6ecdf4a629a485e5efe5485e52b1
Author: candyleer <295198088@qq.com>
Date:   Mon Apr 16 18:29:29 2018 +0800

    1should find method from parent

    Signed-off-by: candyleer <295198088@qq.com>

所有信息都有Signed-off-by:这个参数了

$  git push origin  -f

再次查看 github 的 CI,DCO 相关的就check pass啦