Truncate `git` History

git-truncate-history.sh

#!/bin/bash -eux

# Where to truncate from
export HASH=my-hash

# Truncate history
git checkout --orphan temp "${HASH}"
git commit -m "Truncate History"
git rebase --onto temp "${HASH}" master
git branch -D temp

# Push
git push --force-with-lease

# Clean
git gc --aggressive --prune=now
git reflog expire --expire-unreachable=now --all
git gc --aggressive --prune=now