Since I didn’t want to loose the data for this site in case of spontaneous breakage I added a Github mirror.

For this to work a found a post at stackowerflow which reccommend doing the following

cd /path/to/blog.git
git remote add --mirror=push github [email protected]:user/repo.git # the =push part is new

and then adding a git push --quiet github to my blog.git/hooks/post-receive hook