There is a new pull request by q66 against master on the void-packages repository

https://github.com/void-ppc64/void-packages netcdf
https://github.com/void-linux/void-packages/pull/11498

netcdf: update to 4.7.0
The 4.6.2.1 release actually got removed from github, so update to latest to unbreak.

A patch file from https://github.com/void-linux/void-packages/pull/11498.patch is attached