It can be hunted in the Parque Fernando and Silver Ridge Peaks.
Clone this repo airportbrcmfixup, AirportBrcmFixup. This will pull all newest kext and build into zip files. You can fixed this by turn off in Kernel and Kext Patches on Clover or Kernel > Patch on Opencore but HDMI Audio will be disabled From 10.15.6, event 11, HDMI audio is dead, still finding solution.
