$ git clone -n https://src.fedoraproject.org/rpms/octave-statistics.git /var/lib/mock/f41-build-1303314-23493/root/chroot_tmpdir/scmroot/octave-statistics
Cloning into '/var/lib/mock/f41-build-1303314-23493/root/chroot_tmpdir/scmroot/octave-statistics'...
$ git fetch origin 68a008ca29e108962fd759ab08267f3fe7faba58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-statistics
 * [new ref]         68a008ca29e108962fd759ab08267f3fe7faba58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68a008c Update to 1.6.7