Burn git to the ground, keep only latest commit, shrink size

gistfile1.txt

Burn git to the ground, keep only latest commit, shrink size:
# Adapted from https://stackoverflow.com/questions/9683279/make-the-current-commit-the-only-initial-commit-in-a-git-repository
git checkout --orphan newBranch
git add -A  # Add all files and commit them
git commit
git branch -D master  # Deletes the master branch
git branch -m master  # Rename the current branch to master
git gc --aggressive --prune=all     # remove the old files
git push -u -f origin master  # Force push master branch to github
git gc --aggressive --prune=all     # remove the old files