$ git clone -n https://src.fedoraproject.org/rpms/octave-general.git /var/lib/mock/f42-build-865373-173040/root/chroot_tmpdir/scmroot/octave-general
Cloning into '/var/lib/mock/f42-build-865373-173040/root/chroot_tmpdir/scmroot/octave-general'...
$ git fetch origin 7336723793866212922580796ac3ea9ac2dec9eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-general
 * [new ref]         7336723793866212922580796ac3ea9ac2dec9eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7336723 Rebuild for octave 9.2