Running a `gdk update` fails for gitaly
Overview
Running gdk update
(or more accurately make gitaly-update
) fails with:
$ make gitaly-update
--------------------------------------------------------------------------------
Updating gitlab-org/gitaly to cc879cfb5db4ed342c4f0ea744dbbfdc9649b35f
--------------------------------------------------------------------------------
fatal: reference is not a tree: cc879cfb5db4ed342c4f0ea744dbbfdc9649b35f
command failed: git checkout cc879cfb5db4ed342c4f0ea744dbbfdc9649b35f
make: *** [gitaly/.git/pull] Error 1