$ git clone -n https://src.fedoraproject.org/rpms/python-exabgp.git /var/lib/mock/f40-build-2634533-66011/root/chroot_tmpdir/scmroot/python-exabgp
Cloning into '/var/lib/mock/f40-build-2634533-66011/root/chroot_tmpdir/scmroot/python-exabgp'...
$ git fetch origin 763341552b3826da6ce1c423af2b58fec550cdc3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-exabgp
 * [new ref]         763341552b3826da6ce1c423af2b58fec550cdc3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7633415 Adjust for unification of /usr/sbin and /usr/bin