git commit --amend --reset-author

#!/bin/sh

git filter-branch --env-filter '
an="$GIT_AUTHOR_NAME"
am="$GIT_AUTHOR_EMAIL"
cn="$GIT_COMMITTER_NAME"
cm="$GIT_COMMITTER_EMAIL"
if [ "$GIT_COMMITTER_EMAIL" = "这里写你原来的邮箱" ]
then
	cn="你想替换成的用户名"
	cm="你想替换成的邮箱"
fi
if [ "$GIT_AUTHOR_EMAIL" = "这里写你原来的邮箱" ]
then
	an="你想替换成的用户名"
	am="你想替换成的邮箱"
fi
	export GIT_AUTHOR_NAME="$an"
	export GIT_AUTHOR_EMAIL="$am"
	export GIT_COMMITTER_NAME="$cn"
	export GIT_COMMITTER_EMAIL="$cm"
'