I don't know such a word.
Sorry for being terse.
Hyphen is that little dash some use to show how confused they are about how they feel and where their loyalties are. These scumbags will avoid and weasel when asked which side they would take - from wars to soccer matches. They overlook the fact that one cannot belong to two tribes - just as one cannot love and be married to two women at the same time. Even if legal, it's immoral and disgusting.
Graphically, it looks like this: Polish-American. Or Polish-German...