$ git clone -n https://src.fedoraproject.org/rpms/catfish.git /var/lib/mock/f45-build-6667-350/root/chroot_tmpdir/scmroot/catfish
Cloning into '/var/lib/mock/f45-build-6667-350/root/chroot_tmpdir/scmroot/catfish'...
$ git fetch origin 834c1dd8fd4656c41a8625aa3b65d9af6a6d2388:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/catfish
 * [new ref]         834c1dd8fd4656c41a8625aa3b65d9af6a6d2388 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 834c1dd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild