$ git clone -n https://src.fedoraproject.org/rpms/octave-statistics.git /var/lib/mock/f40-build-774026-127559/root/chroot_tmpdir/scmroot/octave-statistics
Cloning into '/var/lib/mock/f40-build-774026-127559/root/chroot_tmpdir/scmroot/octave-statistics'...
$ git fetch origin b093a9f0d2c713e299c763a924d60bd3ed33a919:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-statistics
 * [new ref]         b093a9f0d2c713e299c763a924d60bd3ed33a919 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b093a9f Update to 1.6.1