Comment on June 2017 CU for SharePoint 2013 product family is available for download by Stefan Goßner

Hi Kevin,
there is nothing to fix. You are just not looking at the right place.
The database schema version is not a valid indicator for a patch installation.
See here for details:
https://blogs.technet.microsoft.com/stefan_gossner/2016/08/23/sharepoint-does-not-have-a-build-version-full-stop/
Cheers,
Stefan