Any way to acess files from a workshop addon?

I ask this because I’d like to attempt to modify a workshop addon I have that adds more textures to the material browser from Source games (because for some reason Gmod 13 has only like twenty textures in it). It oddly though does not work in multiplayer. I was going to look in the garrysmod files and see if I could attempt to fix it instead of making an autorun materials browser file (because it’d take way too long). I found a workshop folder but it only has .cache files. Anyway to access the actual files as if I downloaded them normally?

There’s a .gma decompiler [del]somewhere around here[/del]

I think I found it. It’s pretty old, but there should be a working version later on in the thread.