The author remixed this model.
I rotated segments in the original file so it doesn't take as much room on the build plate. I then scaled it up 163% so it maxes the Prusa MK3's build plate. I added things to help it print (2.4 mm brim, “Toe nails” and “Brim Creators”), so if you don't need them, you can remove them. If it wasn't so much work rotating the pieces, I'd have selected “Reupload of another model – respecting original license.” There is some room for improvement, but it was good enough for me.
Note that none of the pieces bound up on me (except the brim), so if it binds on you, you should use the original model or tune your printer better. I might not have needed the brim, but I was using a 250 gram spool and it kept failing and I didn't want to run out. You can see my settings in the 3mf file (AFAIK).