$ git clone -n https://src.fedoraproject.org/rpms/bullet.git /var/lib/mock/f41-build-875041-16267/root/chroot_tmpdir/scmroot/bullet
Cloning into '/var/lib/mock/f41-build-875041-16267/root/chroot_tmpdir/scmroot/bullet'...
$ git fetch origin b191b4fddcb700df4021b8fd7523e6db50944608:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bullet
 * [new ref]         b191b4fddcb700df4021b8fd7523e6db50944608 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b191b4f Eliminate use of obsolete %patchN syntax (#2283636)