Not really I think Koakuma's hair is much longer than Komachi's. Except she cut it recently (PoFV)
One of the Koakumas we've seen in the 6th game is her hair short.
I'll photograph your naked body, Koakuma-chan...Yeah, I'm coming back now.Sorry I'm late. I've been busy with my work at the library.Hello, Shiki-sama? It's Komachi.