Git

git commit --amend --author="<name> <email>"

# Make some changes to files
git add .
git commit --amend --author="BABA983 <baba@hello.com>"

# or
git filter-branch -f --env-filter '
OLD_EMAIL="haha@hello.com"
CORRECT_NAME="BABA"
CORRECT_EMAIL="baba@hello.com"
if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_AUTHOR_NAME="$CORRECT_NAME"
    export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags

git rebase --onto new-parent-branch old-parent-branch [target-branch]

git diff master HEAD --stat --name-only | grep migration

GIT_EXTERNAL_DIFF=difft git log -p --ext-diff

git rev-parse HEAD

git diff --cached --pickaxe-regex | grep -n "console.log"