I installed git on Ubuntu 10.04 at home in an attempt to have a local repository for my powershell code. It worked upon installation, but I attempted to commit and push some updates and it appeared I had lost permissions some how (likely after the last round of patching).

GitGUI would puke:

    fatal: failed to write objectPushing to
git@arti:/home/git/repositories/powershell.giterror: unpack failed: unpack-objects abnormal exitTo
git@arti:/home/git/repositories/powershell.git ! [remote rejected]
master -> master (n/a (unpacker error))error: failed to push some refs to 'git@arti:/home/git/repositories/powershell.git'

GITBash would give me:

fatal: the remote end hung up unexpectedly

On my Ubuntu server I could

ls -lah
/home/git/repositories/powershell.git/objects

and see that ROOT had permissions on some of the files.

A simple

chown -R git:git objects

gave the user:group permissions back...And I was able to push! Success!