$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki.git /var/lib/mock/f45-build-24386-603/root/chroot_tmpdir/scmroot/perl-Kwiki
Cloning into '/var/lib/mock/f45-build-24386-603/root/chroot_tmpdir/scmroot/perl-Kwiki'...
$ git fetch origin 52c5e5f9485a8367c9192b901c93b75e0db43371:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki
 * [new ref]         52c5e5f9485a8367c9192b901c93b75e0db43371 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52c5e5f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild