What is this git add all about?

Why do we have to git add pie over and over?

Isn't Git already tracking pie?

Answer: git add does not (only) tell Git to start tracking a file

In between the repository and your working directory is the index

The git add command is adding files to the index

When you commit, you're committing the index

Next

https://perl.plover.com/yak/git-intro/