$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-Users-Remote.git /var/lib/mock/f45-build-24380-603/root/chroot_tmpdir/scmroot/perl-Kwiki-Users-Remote
Cloning into '/var/lib/mock/f45-build-24380-603/root/chroot_tmpdir/scmroot/perl-Kwiki-Users-Remote'...
$ git fetch origin d2f413869c9972ea1d3baa54597938450c3ed802:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-Users-Remote
 * [new ref]         d2f413869c9972ea1d3baa54597938450c3ed802 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2f4138 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild