Litten/Incineroar fake off/parting shot

Hello, how can I get both of these egg moves on the Incineroar? The given Litten from Seaport don't have any of those moves, so breeding won't work, and idk if I can get other somewhere that gonna have it. Is there any chance in this version to get it? Thanks in advance for help
PS. I'm at the post-game, have beaten the elite 4 already