The curl command pulls data from a URL into your terminal. So you can actually go to cheat.sh in a web browser to see what the output would be (also wouldn't necessarily recommend doing this vs. blindly pasting commands, but in this case, perfectly safe!). It looks like a little Unix command helper tool.
Quick google shows it's (likely) an aggregate cheat sheet for numerous resources which can be accessed via curl cheat.sh/ or curl cht.sh
(I haven't confirmed this, verify the safety of all commands and code that you run on your system before you run it, don't inherently trust someone else)