Why does git add files to status that have no physical changes?

Question

git

Let's just open the file and save it. And he immediately got into git status.
UPDATE:
git diff showed the following:

Answer 1

Git wrote to you: LF changed to CRLF.
These are different types of newlines.
Most likely, earlier the code was written in *nix systems, and now on Windows.
To avoid this, set up your code editor.