Stone rammed – hit-and-run!?

Gun Evening, I have a question! I’m just doing my civilian service and I hit a stone last week at a clinic with a service car. I got off for a short time and saw what was broken on the car. Since only the right side skirt got scratches and pressed in I drove on (had just 2 passengers on board). When I was back from my tour I reported everything logically white to my serviceman. Was also not a problem. The clinic called my boss and wants to report me now because of driver’s flight! What can happen to me now? I thought about a lot at that moment, would have been informed in the clinic also if it had been a fence or another car, but not with a stone lying on the green area as a limit. Since I still have probation time it would all be pretty bad… Can they really have something on me? Greetings