$ git clone -n https://src.fedoraproject.org/rpms/withlock.git /var/lib/mock/f45-build-38407-724/root/chroot_tmpdir/scmroot/withlock
Cloning into '/var/lib/mock/f45-build-38407-724/root/chroot_tmpdir/scmroot/withlock'...
$ git fetch origin 8dcff955fde2960f40ea58b0471cb4c7fc7cc13e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/withlock
 * [new ref]         8dcff955fde2960f40ea58b0471cb4c7fc7cc13e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8dcff95 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild