m0useanswered grow question 6 months ago I don't know of it, nor have heard of it before.
There is some mention on line of a passion flower called batwing but also known as duckfoot, shares the same names but I doubtful that's it,
There is also a light reflector product called batwing and is used in cannabis cultivation, maybe it was something about this?
Two sites talk about crosses with ducksfoot but its lacking any mention of batwing.
https://www.icmag.com/threads/ducksfoot-and-hybrids.378394/
https://kwikseeds.com/product/frisian-duck-x-freakshow/
Try asking any old pot head you know in the local area or post on some online classifieds locally if your really dieing to know. If it was clones thought you might be SOL, seeds can vary a lot even from the same plant or plant cross and sometimes the special ones are rare and not indicating the general productivity of that strain and that's when you get into breeders clones, high performing weed strains or one you want to preserve.
Best Of Luck Finding It.