Using someone else's clone only cut as a parent raises questions that the hobby has never fully settled. Most people accept that a cut, once shared, is fair game for crossing, but naming the offspring after the original, implying the originator's approval, or selling the seeds without credit tends to start feuds that last years. The unwritten etiquette around this, and a few cautionary tales, are aired on
https://breederregularseeds.com. A simple message to the person who gave you the cut goes a long way.