Temporary exhaust leak fix?

Hey guys I'm set to get my truck smogged Thursday by a guy who will help out but "can't guarantee any miracles". It's a slant 6 with lean burn. I welded up a leak after my cat converter but I noticed I still had an exhaust leak. Went feeling around more and there is a nice sized leak in between the two manifolds.

I don't have time to take the manifolds off and replace the gaskets. Do you guys have any suggestions for any make shift fixes I could use just to get it by smog? Could I run copper rtv across there or would it just burn off? I'm just looking for ideas to get me by smog so I can get myself some time to take the manifolds off and fix it the right way.