Diagnose & remove large files from git repo

git purge large unwanted file.sh

# find large objects

git rev-list --objects --all |
  git cat-file --batch-check='%(objecttype) %(objectname) %(objectsize) %(rest)' |
  sed -n 's/^blob //p' |
  sort --numeric-sort --key=2 |
  cut -c 1-12,41- |
  $(command -v gnumfmt || echo numfmt) --field=2 --to=iec-i --suffix=B --padding=7 --round=nearest

# remove package.tar.xz from repo
  
git filter-branch --index-filter 'rm -f package.tar.xz' -- --all