$ git clone -n https://src.fedoraproject.org/rpms/python-fiona.git /var/lib/mock/f40-build-731369-103859/root/chroot_tmpdir/scmroot/python-fiona
Cloning into '/var/lib/mock/f40-build-731369-103859/root/chroot_tmpdir/scmroot/python-fiona'...
$ git fetch origin 6dd4421af22ee231e07f8ebefffc2bf7af6e83ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fiona
 * [new ref]         6dd4421af22ee231e07f8ebefffc2bf7af6e83ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6dd4421 Update to latest version (#2243737)