$ git clone -n https://src.fedoraproject.org/rpms/perl-CSS-DOM.git /var/lib/mock/f45-build-22104-589/root/chroot_tmpdir/scmroot/perl-CSS-DOM
Cloning into '/var/lib/mock/f45-build-22104-589/root/chroot_tmpdir/scmroot/perl-CSS-DOM'...
$ git fetch origin 223df08b8d504891c6feaa9860961e5b6034e442:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CSS-DOM
 * [new ref]         223df08b8d504891c6feaa9860961e5b6034e442 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 223df08 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild