$ git clone -n https://src.fedoraproject.org/rpms/octave-control.git /var/lib/mock/f42-build-865369-173040/root/chroot_tmpdir/scmroot/octave-control
Cloning into '/var/lib/mock/f42-build-865369-173040/root/chroot_tmpdir/scmroot/octave-control'...
$ git fetch origin ebcb7523ab7702b62834aa58c7e075967a44422b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-control
 * [new ref]         ebcb7523ab7702b62834aa58c7e075967a44422b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebcb752 update to 4.1.0