How to Install Safari Version 12.0 (13606.1.36.1.2)

I mistakenly installed the beta version (12) of Safari (13606.1.36.1.2) on a production machine running macOS High Sierra

Version 10.13.6 (17G65) which is a non-beta version. How do I revert back to the production non-beta version of Safari 11? Is the only option a reinstall of the OS?