I thought about it some more and realised that using just the date allows me to stick
everything in one package. Basically, the idea is:
%global branch1_date 20210101
%global branch2_date 20210202
%global branch3_date 20210303
%global package_date %( bash scriptlet that picks max value from %{branchX_date} macros )
Version: 2.0
Release: %{package_date}.1%{?dist}
I think this should work fine, while also not breaking the packaging guidelines. Thanks
for the suggestion.