For when you realize your personal email is made public to GitHub

commit-cleanup.sh

#!/bin/sh


##
# Best to run these commands separately
##



##
# DISCLAIMER
# This will change the commit refs, therefore, anyone else using your repo will have to clone a new copy
##




# Clone bare copy of repo you'd like to fix

git clone --bare https://github.com/user/repo.git repo-cleanup && cd repo-cleanup




# Update the emails and name in the first few lines
# and run the following script inside that repo

git filter-branch --env-filter '

OLD_EMAIL="old@email.com"
CORRECT_NAME="Correct Name"
CORRECT_EMAIL="your-correct-email@email.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




# Review code for errors




# push fixed commits to remotes as backup

git push --force --tags origin 'refs/heads/*'




# Remove temp repo when done

cd .. && rm -rf repo-cleanup




# for actual repo

# either delete all and clone again
rm -rf my-real-repo && git clone github.com/my-real-repo.git

#
# OR 
#
# move current branch to a new one
git branch -m master master-backup




# pull the fixed master

git fetch




# check for errors

git checkout origin/master # && run tests, etc




# delete old branch

git branch -d master-backup