$ git clone -n https://src.fedoraproject.org/rpms/python-netaddr.git /var/lib/mock/f40-build-2204466-51960/root/chroot_tmpdir/scmroot/python-netaddr
Cloning into '/var/lib/mock/f40-build-2204466-51960/root/chroot_tmpdir/scmroot/python-netaddr'...
$ git fetch origin 6f18bfaa97ebf73017a308f27d373837498a8c10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-netaddr
 * [new ref]         6f18bfaa97ebf73017a308f27d373837498a8c10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f18bfa Conditionalize docs