Make the imagine bigger into one direction without changing perspective?

Hello.

I have a project with a certain cutout.

I want to have a bigger cutout into the upper direction so the building isnt cut off.
But when I make the pixels for image at Height more, I end up with this:

It does what I want in some way, but because I already post edited the upper picture, I just want to put the bigger one in the background at the exact same angle so it makes it a bit higher, without changing to much.

Thanks in advance!