There’s been a change in the production of LEGO Star Wars The Ghost (75053). The hair piece and facial print of the Kanan Jarrus minifigure has been updated from black to dark brown to better reflect the character’s actual look on the animated show.
You can see the difference below in the photo by Mike Ryffranck. If you’re buying a new set, you can just check the box art to see which version of the minifigure will be inside. If you have the old version, try contacting LEGO customer service to get the updated version.