$ git clone -n https://src.fedoraproject.org/rpms/zmap.git /var/lib/mock/f45-build-39367-734/root/chroot_tmpdir/scmroot/zmap
Cloning into '/var/lib/mock/f45-build-39367-734/root/chroot_tmpdir/scmroot/zmap'...
$ git fetch origin 89f3a4376438a33c4a428e950338ec28c3f31584:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zmap
 * [new ref]         89f3a4376438a33c4a428e950338ec28c3f31584 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 89f3a43 drop ix86 support