Problem with multipass denoising setup

Hi guys. I have a problem with multipass denoising setup. What if I want to change HDRI? How to do that with this setup? There is an environment pass. If I include it, there will be original HDRI. But I need a different! I rendered with transparency ofc. It doesn’t work with alpha over node…Background is simply black. But works without multipass setup!
Please help.