I can't tell from the pic (too much zoomed in). The best "repair" would be to remove and fix then replace. If you are going to do that, then why not find a used part at a junkyard? I bet that is no more then 10 at a junkyard or post a wanted advert here (you will need to be certain of the part then).
I have never come across patches or tapes that actually work. You might be able to split a rubber hose and slip it over, then use hose clamps to tighten it to the pinhole.