If you're just winging it then sure, that's acceptable. If you're trying to get an actual substitute for the cloves, then no, nutmeg will definitely not substitute for cloves. apples and oranges... that sounds like a lot of spices though. cloves for one are very pungent so a few pieces might be fine.
Check out my small batch Appalachian Candi Syrups. Dark, Grapefruit, and Pineapple.
Hopefully coming to a brew near you!
Age Old Brewing Candi