$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdelibs4support.git /var/lib/mock/f45-build-14825-464/root/chroot_tmpdir/scmroot/kf5-kdelibs4support
Cloning into '/var/lib/mock/f45-build-14825-464/root/chroot_tmpdir/scmroot/kf5-kdelibs4support'...
$ git fetch origin 599ee9ab88e9040ada228562740bb46a973df8e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdelibs4support
 * [new ref]         599ee9ab88e9040ada228562740bb46a973df8e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 599ee9a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild