This command is used to unstage all changes that have been added to the staging area (also known as index) in Git. The . represents the current directory, so this command will unstage all changes made to all files in the current directory.
Alternatively, you can specify a specific file or directory to unstage by replacing the . with the path to that file or directory. For example:
git restore --staged my-file.txt
This would unstage any changes that were added to the staging area for the my-file.txt file.
