Hi Ryan,
just tested to ensure it works for this lecture.
if you click on the project changes link to go to the gitlab commit for that lecture.
at the top right, theres a button for browse files, if you click that, it will open up another page that contains the files for that lecture.
from there, theres a blue button that says code, if you click that it will expand to allow you at the bottom of the list to download the source code. from there you can select the zip file.
once downloaded, if you extract the zip file to a folder you can then run it in godot.
hope that helps.
Darren