Changing author info

change_author.sh

#!/bin/sh
 
git filter-branch --env-filter '
 
OLD_EMAIL="your-old-email@example.com"
CORRECT_NAME="Your Correct Name"
CORRECT_EMAIL="your-correct-email@example.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

Create a fresh, bare clone of your repository:

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

Copy and paste the script, replacing the following variables based on the information you gathered:
OLD_EMAIL
CORRECT_NAME
CORRECT_EMAIL

update command:

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

Clean up the temporary clone:

cd .. rm -rf repo.git