Undo git add

How to undo/remove file after 'git add'

Lets say you mistakenly added a file using the following command.

git add abc.txt

To undo adding run the following.

git reset HEAD abc.txt

Dont do git reset, you will loose changes

git reset abc.txt    < ---- DONT DO THIS

https://stackoverflow.com/questions/348170/how-do-i-undo-git-add-before-commit