If you have to cut into the covering, do it from the bottom. Any work on the bottom is less likely to be seen.
I just did that on one of my planes.
1...Cut out a small area over where the hinge is (on the wing surface, not the aileron).
2...Next, re-position your hinge.
3...Tack a thin piece of balsa between the trailing edge of the wing and the leading edge of the aileron.
4...Cut a piece of balsa that fits into the hole over top of the re-positioned hinge.
5...Put epoxy into the hole taking care not to get any into the pin on the hinge.
6...Place the piece of balsa (from step 4) over the epoxy in the hole.
7...Even things up.
8...Wipe up the extra epoxy that oozzed out with a paper towel dampened with rubbing alcohol.
9...Don't soak the paper towel.
10.When dry, cut out that piece of balsa from step 3.
11.Cover that little spot with a coving that matched the plane.
12.You can get stick on covering in sheets at the hobby shop or online for a couple of dollars.....Maybe a buddy will give you a couple of square inches of your color if they have it.

LOL
Ron