$ git clone -n https://src.fedoraproject.org/rpms/octave-miscellaneous.git /var/lib/mock/f42-build-865378-173043/root/chroot_tmpdir/scmroot/octave-miscellaneous
Cloning into '/var/lib/mock/f42-build-865378-173043/root/chroot_tmpdir/scmroot/octave-miscellaneous'...
$ git fetch origin b04cb74c3ec3290e6a12629464ac50df73309bfc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-miscellaneous
 * [new ref]         b04cb74c3ec3290e6a12629464ac50df73309bfc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b04cb74 Rebuild for octave 9.2