What's the point of brands making long ass coats when the average person is not going to be tall enough to wear shit like this? Yeah, this is obviously an extreme example, but there are many fashion forward brands that make long ass coats that most people would look retarded in unless you're at least model height.
you get it hemmed. generally when they're that long they never put anything too complicated or detailed around the hem for exactly this reason. because they know most people will need to get the coat hemmed to achieve the same look where it's almost grazing the ground. a lot of places they'll even offer to do it for you with their in house tailor.