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

https://github.com/ndowens/void-packages owncloud
https://github.com/void-linux/void-packages/pull/26543

owncloudclient: update to 2.7.1
Removed patch, as it is now upstream

A patch file from https://github.com/void-linux/void-packages/pull/26543.patch is attached