I think he knew he hit a person but lied about it trying to avoid punishment..
think you are right. Why would anyone wants to return to the scene after hitting something unknown?
Unless they were intoxicated and don't want to get charge on the spot they remembered once the drug or alcohol wears off.
I remembered my first deer. Poor gal just bought a brand new car. I was the driver. I dodged the first one that ran across the road but the second one I ended up hitting. If I wanted to see what I hit, I stopped then and there and free meat. Good thing the car was not damage and it was a fawn, her baby. I'm not gonna incriminate myself so I'll just leave it at that but yall probably know what's up already.
It was during a forest fire and all them critters be running from the fires to civilian areas. Now we got fires all over the place so drive safely guy.