$ git clone -n https://src.fedoraproject.org/rpms/python-ZEO.git /var/lib/mock/f40-build-797251-141191/root/chroot_tmpdir/scmroot/python-ZEO
Cloning into '/var/lib/mock/f40-build-797251-141191/root/chroot_tmpdir/scmroot/python-ZEO'...
$ git fetch origin b9d7dc5f498c3668fdd6a411e20ac0628211d065:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ZEO
 * [new ref]         b9d7dc5f498c3668fdd6a411e20ac0628211d065 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9d7dc5 Stop building for 32-bit x86