title: Git - folder "refs" missing
body: <p>I had to recover a few git bare repositories from a backup, and found out that git (I am using msysgit on wondows XP) did not recognise the repo as such. After some investigation, I found the problem seems to be that the folder "refs" was missing, together with the subfolders "heads" and "remotes". I also do not have the file "heads/master". Is there any way I can re-create it? I really need to recover the data in these folders.</p>