git-declone

#!/bin/bash

#
# Old `git clone` of repositories lying about with or without changes, take
# up space. What if we can get rid of these clones without losing our work?
#
# This is a git 'unclone' in a sense that it also tries to preserve unpushed
# revisions. So, it turns the local branches into patches, so that the clone
# can be safely deleted. This does not take reflogs into account.
#

output=$1

if [[ "$output" == "" ]] ; then
    exit -1
fi

git branch -v > ${output}/local-branch-state
git branch -rv > ${output}/remote-branch-state
git remote -v > ${output}/remote-state

for branch in $(git show-ref | grep ' refs/heads/' | cut -c53-) ; do
    mkdir -p ${output}/${branch}
    git format-patch $(for i in $(git show-ref | grep ' refs/remotes/' | cut -c41- | grep -v HEAD); do echo $i..${branch}; done) -o ${output}/heads/${branch}
    rmdir ${output}/${branch} 2>/dev/null

    if [[ -e ${output}/${branch} ]] ; then
	echo ${branch}
	ls -l ${output}/${branch}
    fi
done