Git repo wedged. How do I get it fixed?

[John Ralls <jralls ceridwen us>]

I'm unable to push a commit to gtk-osx. How do I get a git.gnome.org admin to unwedge it?

The error is:
Counting objects: 10, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (6/6), done.
Writing objects: 100% (6/6), 1.42 KiB, done.
Total 6 (delta 5), reused 0 (delta 0)
fatal: Unable to create '/git/gtk-osx.git/refs/heads/master.lock': Permission denied
fatal: The remote end hung up unexpectedly
fatal: The remote end hung up unexpectedly

Regards,
John Ralls