I finally ran across the 1st application we use that needs a separate installer for ARM64 and x64 platforms that we used Patch Management for. Here we are 3 years in to Apple Silicon, and JAMF still does not have a solution for this.
The best JAMF has is to package both the ARM64 and x64 packages in to a temp directory, and run the correct package with a post install script which detects the platform. Take that package and use it for the Patch Management package. If anyone wonders why I almost never recommend using Patch Management and say just use polices, this is one of the reasons. After 3 years this is just lazy and we deserve better.
Here is a feature request from 2 years ago with 4 votes. Lets see if we can give it some traction.
Architecture Specific Patch Definitions | Jamf Nation Feature Requests