環境
2d14654 HEAD@{0}: commit (amend): Other's patch
428555b HEAD@{1}: commit: Other's patch
bd33767 HEAD@{2}: commit: Previous one
先把 HEAD 退回到原來的 patch, 記得確定把你的 working directory 搞乾淨
$ git reset --hard HEAD~1
HEAD is now at bd33767 Previous one
$ git cherry-pick 428555b
....
把 amend 到別人 patch 的內容 diff 出來,重新 apply, apply 的參數 - (dash) 表示是從 STDIN 讀入
$ git diff 428555b 2d14654 | git apply -
這時打 git status 就可以發現當初的修改回來 unstage 的狀態了, 重新 git commit
$ git commit
完成