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

https://github.com/yopito/void-packages QtforPy.5.14.with.Qt.5.13.2
https://github.com/void-linux/void-packages/pull/18400

FreeCAD: fix for Qt 5.13.2 and python 3.8.1 with QtForPython stack update
Fix issue #18353

A patch file from https://github.com/void-linux/void-packages/pull/18400.patch is attached