Unpainted carbon fiber? I'm not sure it is a clear coat you are looking at. The outer glossy layer of most of the CF layup jobs I've done is actually the top layer of polymer resin. Check with the maufacturer to see if they treated the hood with clearcoat, or whether the outer layer of resin has been damaged.If it is damaged, restoring the finish is hugely difficult... it may be easier to surface the hood and paint it the color of the car, or replace it.