$ git clone -n https://src.fedoraproject.org/rpms/clawsker.git /var/lib/mock/f45-build-5352-339/root/chroot_tmpdir/scmroot/clawsker
Cloning into '/var/lib/mock/f45-build-5352-339/root/chroot_tmpdir/scmroot/clawsker'...
$ git fetch origin 3cbb1ac5b16fba46108cf7fecd48fc4406b342ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clawsker
 * [new ref]         3cbb1ac5b16fba46108cf7fecd48fc4406b342ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cbb1ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild