$ git clone -n https://src.fedoraproject.org/rpms/setzer.git /var/lib/mock/f40-build-2260822-54423/root/chroot_tmpdir/scmroot/setzer
Cloning into '/var/lib/mock/f40-build-2260822-54423/root/chroot_tmpdir/scmroot/setzer'...
$ git fetch origin 32a46814af17cbf886e80cad4fa94e5be3cd6aed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/setzer
 * [new ref]         32a46814af17cbf886e80cad4fa94e5be3cd6aed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 32a4681 Updating to 65