Update git repo and history with new name and email address - useful for removing PII from git history

fixgit.sh

#!/bin/sh

git filter-branch -f --env-filter '
CORRECT_NAME="Darkwing Duck"
CORRECT_EMAIL="1217269+dduck@users.noreply.github.com"
export GIT_COMMITTER_NAME="$CORRECT_NAME"
export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
export GIT_AUTHOR_NAME="$CORRECT_NAME"
export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
' --tag-name-filter cat -- --branches --tags