Git post-receive hook for deploying with --bare repo

post-receive

#!/bin/bash
## Remember to change /var/www/ to the right dir and chmod +x post-receive
while read oldrev newrev refname
do
    branch=$(git rev-parse --symbolic --abbrev-ref $refname)
    if [ "master" == "$branch" ]; then
        GIT_WORK_TREE=/var/www/ git checkout -f
    fi
done