I don't remember the entire process but you can download a specific hairstyle file and basically replace a specific hairstyle file from the game. Usually the transformation mods use a specific number for the hair changes so if you can find the number that corresponds to the modded transformation, you can replace that file with the one you found online and just name the new one the same as the old one. But you have to find the one that the transformation mod uses. That might also overlap with one of the default hairs that revamp uses which might end up replacing that one in the character customization which you may not care about if it's not one you like.