Change Plone Logo link from Home to External URL

I didn't get any useful responses from the Plone IRC channel this unfortunately, but after a while of digging, and a lot of trial and error, I finally figured out how to make this change easily.

The goal:

Change the URL for the header/banner/logo at the top of the website from pointing to "Home" (aka portal_navigation_url" to an external website. This was specifically for the RPG Trailer fundraiser at http://rpgtrailer.com to point to its donation page at http://gofundme.com/rpgtrailer.

Using ZMI, go to:

portal_view_customizations

Select plone.logo which links to:

portal_view_customizations/zope.interface.interface-plone.logo

Delete the two lines:

tal:attributes="href view/navigation_root_url;
title view/navigation_root_title"

And replace them with (keep indent of course):

href="http://gofundme.com/rpgtrailer"

Save changes. Load that website, and click the logo/banner at the top of the site, and verify it goes to the desired website.

Enjoy!