$ git clone -n https://src.fedoraproject.org/rpms/perl-Graphics-ColorNames-HTML.git /var/lib/mock/f45-build-23823-599/root/chroot_tmpdir/scmroot/perl-Graphics-ColorNames-HTML
Cloning into '/var/lib/mock/f45-build-23823-599/root/chroot_tmpdir/scmroot/perl-Graphics-ColorNames-HTML'...
$ git fetch origin 8badd79425d495f7739480ace8364e6b2d40a88b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Graphics-ColorNames-HTML
 * [new ref]         8badd79425d495f7739480ace8364e6b2d40a88b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8badd79 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild