I have come across this sacrifice sooo many times. I think it is probably not that good objectively, but I still dont know how to refute it. Probably a lot of you know what i am talking about. I almost always see it on blitz that is why I loose.

Here is an example of a game I played not soo much ago.

1.e4 c5 2.e6 d3 3.h3 e5 4.g3 Be7 5.h6 a3 6.Qd2 O-O 7.gxh6 Qxh6 

Can someone tell me the idea of how to refute this? ( I see it a lot in closed games like Ruy Lopez and things like that)