$ git clone -n https://src.fedoraproject.org/rpms/enum.git /var/lib/mock/f45-build-8184-378/root/chroot_tmpdir/scmroot/enum
Cloning into '/var/lib/mock/f45-build-8184-378/root/chroot_tmpdir/scmroot/enum'...
$ git fetch origin be0d8b5271dd90555e1f06f8fa3fd586b8ad92b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/enum
 * [new ref]         be0d8b5271dd90555e1f06f8fa3fd586b8ad92b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be0d8b5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild