$ git clone -n https://src.fedoraproject.org/rpms/ocproxy.git /var/lib/mock/f45-build-20835-574/root/chroot_tmpdir/scmroot/ocproxy
Cloning into '/var/lib/mock/f45-build-20835-574/root/chroot_tmpdir/scmroot/ocproxy'...
$ git fetch origin 202b219efee4edcec4097b2875ab4800835cb288:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocproxy
 * [new ref]         202b219efee4edcec4097b2875ab4800835cb288 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 202b219 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild