There is a new pull request by Chocimier against master on the void-packages repository

https://github.com/Chocimier/void-packages-org purge-binpkgs
https://github.com/void-linux/void-packages/pull/38098

xbps-src: add purge-binpkgs target
Removes from local repository binary packages which
do not match template version.
Keeps in place packages for which template is missing.

Helps to sidestep #31347


A patch file from https://github.com/void-linux/void-packages/pull/38098.patch is attached