Can i revert a part of changes thats already pushed together?

[Chandra Agusdiyanto]

I have a question about source tree
So lets say

i already pushed file A,B and C, and they are already in the history

then i'd like to revert the change only for B, the A and C stays

is it possible to do? I see there is options in the history tab like "reverse file", or reverse hunk for every each line of B

But i am too scared to try it
Any solution? or maybe anyone have tried the reverse file? or reverse each hunk in the history tab?