Right before the Indians tie Todd to the tree with the intention of burning him, he's having a conversation with Johnny. During this conversation, Johnny's left arm repeatedly changes positions, from being stretched out against the tree, to holding his hat in front of him and back to stretched out against the tree.
In the beginning of the film, after Red Cloud shows to Johnny Hawks two men hung by the feet, Hawks stands talking to Red Cloud and Grey Wolf. Then his hands appears either grabbing the holster or by his sides, alternately, when it cuts from one shot to another.