update – Traps trust in Git to update

Background: So I just manually updated ~ 75 Drupal sites (7 and 8) last Friday, when there was another main update. Also, our current development configuration is quite serious. We are starting to implement Git and we do not have any development server. Yes, that means that the changes in the code are always live …

I am considering using Git to handle my main updates due to the creation of a Drupal site with Git, but I am still quite new with Git.

How could I implement this on existing sites? Is there something that I should be careful to move on?