I work with the NvRTX_Caustics-4.27 branch.
Runing Setup.bat after cloning the branch gives the error:
.\Setup.bat
Checking dependencies…
Updating dependencies: 0% (0/64293)…
Failed to download ‘http://cdn.unrealengine.com/dependencies/UnrealEngine-14885582-…’: The remote server returned an error: (403) Forbidden. (WebException)
Press any key to continue . . .
Is that branch on any priority list?