$ git clone -n https://src.fedoraproject.org/rpms/html401-dtds.git /var/lib/mock/f45-build-13487-451/root/chroot_tmpdir/scmroot/html401-dtds
Cloning into '/var/lib/mock/f45-build-13487-451/root/chroot_tmpdir/scmroot/html401-dtds'...
$ git fetch origin d802e27c1e69831d625236a4b6c41c9de1059efa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/html401-dtds
 * [new ref]         d802e27c1e69831d625236a4b6c41c9de1059efa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d802e27 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild