$ git clone -n https://src.fedoraproject.org/rpms/git-repair.git /var/lib/mock/f40-build-2198985-51716/root/chroot_tmpdir/scmroot/git-repair
Cloning into '/var/lib/mock/f40-build-2198985-51716/root/chroot_tmpdir/scmroot/git-repair'...
$ git fetch origin 1a3ac699e61228c656e507f24939750f4ae81272:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-repair
 * [new ref]         1a3ac699e61228c656e507f24939750f4ae81272 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a3ac69 Utility.UserInfo: import System.Posix.User for UserEntry