After being beaten to a bloody pulp by Billy the Kid's gang, Matt (Jim Davis) secrets himself under a canvas on the back of a wagon being driven (he suspects) to the Kid's hideout. The wagon was stopped, and Jim discovered, along the trail by the sheriff & his posse. Miraculously, Jim is wearing a fresh clean shirt and there no blood on his face which, moments earlier, had been covered in blood.
When Matt Clark is beaten up by the toughs in the saloon he bleeds profusely from his head wound. However right after when he conceals himself under a tarp on a wagon and is discovered by the sheriff, all trace of blood is gone.