Don’t give up! Git stores all the states of the repository in the git reflog. Type ‘git reflog’ in and hit enter, then find a hash on the left that looks like a good place to continue from. Type git checkout ((HASH)) to see what’s at that hash (will update everything in your directory to that point in time), and git checkout master to go back if it’s not the right one and try another one. Eventually you can do git reset –hard ((HASH)) to fully revert your directory to that hash.

that sucks but you still could enter it as a jam entry, provided you get git to work again (today)

Sorry to hear that :s

Maybe you can get your stuff back and use something other than git?