and, only coincidentally, is white?!

There are a lot of coinkydinkies in cyberspace. If you were to argue for the words to be cognate, you'd have to (1) explain the an- prefix in Hittite (and maybe Greek) forms, (2) the correspondence of initial Sanskrit gV- with Hittite k-, (3) why a city in Anatolia came to be called 'white', (4)how the name of the city came to be associated with goats and rabbits, and (5) Hittite has a sh, Greek a r, and the Sanskrit form an r so you'd have to explain why the r in Sanskrit does not reflect a PIE r as it typically does, but a s.

Ceci n'est pas un seing.