In URP how would I make lighting completely dark while using GI?

I’ve been playing around with the lighting settings but I can’t figure out how to make a scene completely black. I can get it black if I set the ambient occlusion to 0 in the shader but this also turns off global illumination.

So like in the image you can see an opening in the room where GI light floods in. Even if I plug that whole and regenerate lighting its still the same brightness in the room. I want the room to be completely black if there is no light shining in it.

To completely disable ambient lighting:

  1. Open the lighting window (Window > Rendering > Lighting), navigate the Environment tab.
  2. Set the Environment Lighting Source to Color, set the color to fully black.
  3. Set the Environment Reflections Source to Custom, but don’t assign a cubemap