After the standoff in the quicksand between Cheyenne and Yellow Knife, the Indian Chief mounts his horse and he's completely clean with no trace of mud on him; Cheyenne is relatively clean too considering they were both up to their necks in quicksand.
Indian is all dried and dressed after fight with Cheyenne.
When the Utah Kid asked Cheyenne if he could pick up his hat after the shootout, it was obvious to the viewer that he was going for his gun on the ground. Cheyenne would have known that and he in fact shot the Utah Kid to death. That was out of character for Cheyenne to kill someone when he could have just told the Utah Kid to leave without his hat or he could have secured the gun first.