$ git clone -n https://src.fedoraproject.org/rpms/clawsker.git /var/lib/mock/f40-build-2208971-52150/root/chroot_tmpdir/scmroot/clawsker
Cloning into '/var/lib/mock/f40-build-2208971-52150/root/chroot_tmpdir/scmroot/clawsker'...
$ git fetch origin 73448023653c71dc2607cfa105baccd9e23f1397:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clawsker
 * [new ref]         73448023653c71dc2607cfa105baccd9e23f1397 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7344802 Update to 1.3.8.