cleangit.sh

#!/bin/bash

default_branch=`basename $(git symbolic-ref --short refs/remotes/origin/HEAD)`

git checkout --orphan tmp
git add -A				# Add all files and commit them
git commit
git branch -D $default_branch		# Deletes the default branch
git branch -m $default_branch		# Rename the current branch to default
git push -f origin $default_branch	# Force push default branch to github
git gc --aggressive --prune=all		# remove the old files