I would ask a few more questions, like, is this a home you plan on living in for years or just a long term Airbnb that you want to patch ?
Maybe I'm misunderstanding your comment about the hole, but couldn't you just insert a stiff wire at that point and have someone up on the roof look for it?. If not measure the distance from a known exterior wall from inside and add 6-8" outside and you have a closer measure of finding the spot of the leak.
Since you have the end point of the leak... work backwards and start removing the interior framing and that will likely lead you to the wetspot ie the hole in your roof which TBH looks like a drunken toddler was your roofer. You can slowly work your way up, since water really only goes down, you will find many wet boards along the way and you won't have to tear a hole in your roof looking for it. Then patch that hole, reroof that job and if you can salvage the framing otherwise put in new boards.
I recently had to fix a bad dry rot problem that was patched so poorly by the previous owner that they tore off the rotted siding, sheeting and installed a new piece of plywood as a nailer strip. Then they reinstalled new plywood over dry rotted framing, installed siding and sold the house. $22,000 later we found/solved the issue and am suing the previous owner for lack of disclosure of the repair, fraudulently sold a house claiming there was no repair as we now know he knew there was an issue but covered it up in addition I have testimony from neighbors they witnessed the work being done the prior summer.
If you are skittish about swinging a hammer or doing repairs blindly, I have a few options to fix this once you find the leak, you can get someone with 15+ years experience in roofs who will happily supply you five different references of old jobs where the customer is happy. Ask that roofer to come over and give you advice, I've had so much luck making friends with contractors, beer and pizza go a long way to get advice. Its likely that this is a common occurence and the contractor has a way to deal with this that you can benefit from.
Next option you can repeat the mistake of the previous person and try to patch this job by draping a tarp over an area or doing other half measures, this is not undoable but its hit or miss and will waste time. Then you become the same type of person who does a half way job and there is a special place in the underworld for people who half ass things.
I guess a nerdy option would be to draw squares on your roof and use different colored water to pour onto that area, when you get that color water into your wood framing you have at least a vertical start point.