Changing Base Templates in Octopress

A couple of days ago I tweeted.

I like Octopress, I really do, but I have no idea where it's generating this <head> tag from. Very confused.
— Arthur Maltson (@amaltson) November 23, 2015

The issue I ran into was trying to get a different head.html to work with Octopress Genesis. Turns out that while Jekyll by default looks at _includes/head.html, when you use the Octopress Genesis, you make the changes in the _plugins/theme/includes directory which maps to the Octopress Genesis includes directory under assets.

Once I dropped a head.html in _plugins/theme/includes my new <head> elements were picked up.