Sounds fixable
I have had a few bo bo's like that and have always fixed them. Flatten dimple with your flush dies. File out any possible stress risers (cracks). Use an epoxy filler in the hole and sand flush. In a few years when you forget where it is, you will never be able to find it. If you are going to have a polished skin, forget everything that I have said, and buy new.
Steve Barnes "The Builders Coach"