$ git clone -n https://src.fedoraproject.org/rpms/python-exdir.git /var/lib/mock/f40-build-2476866-61593/root/chroot_tmpdir/scmroot/python-exdir
Cloning into '/var/lib/mock/f40-build-2476866-61593/root/chroot_tmpdir/scmroot/python-exdir'...
$ git fetch origin 641c1110e23533ec60d38c03e030137c069041ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-exdir
 * [new ref]         641c1110e23533ec60d38c03e030137c069041ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 641c111 Add Packit config