Cool idea but there are some issues. For example: you are way too slow. It´s just frustrating to walk for minutes just to place some new clones. I also found a bug that you can´t create a clone while standing on another. Is this intended? If you fix this it should be more enjoyable.
I like the ideas of Iwday and I also had the issue with the ramps. Another solution for this would be to make two or three raycasts (one left, one right and one in the middle).
Tip: Do not change the "texture" of the T-shirt. It looks a little bit weird to see it every frame in a different look.
Overall it´s a really cool idea with a lot of potential. Good Job!
I´ve submitted a local multiplayer game: https://itch.io/jam/brackeys-4/rate/722755. I would be happy to get your feedback on it. :D