What is the correct repo for Az-400 development for enterprise devops learning path?

Question

I am following the learning path for Az-400 development for enterprise devops. There seems to be a recurring issue on my journey. While following instructions and some labs in the course, there are a lot of references that are being referred to without actually existing.

For example, I have been following the path and I have reached the Git Hooks part. I have followed all the previous instructions, including the repo they have asked us to clone. Now it is telling me to navigate to .git/hooks, which does not exist. Another instance of this was earlier when they asked us to edit HomeController.cs, which also does not exist in the repo we were asked to clone. I tried following the instructor led series on the link ( https://learn.microsoft.com/en-us/shows/on-demand-instructor-led-training-series/az-400-module-x) but it did not help since these instructions were not present in the videos.

My question is, what is the correct repo or video I should follow in order to be able to correctly follow this tutorial without missing assets? Thanks!