How do you revert a git file to its staging area version?

Solution 1:

• Prior to Git 2.23: git checkout a.txt
• Starting from Git 2.23: git restore a.txt

Git tells you this if you type git status.

Prior to Git 2.23:

# On branch master
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
# modified:   a
#
# Changed but not updated:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
# modified:   a
#

Starting from Git 2.23:

On branch master
Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
        modified:   a

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   a

Solution 2:

git checkout -- a.txt

The other answer on this page doesn't have the --, and resulted in some confusion.

This is what Git tells you when you type git status:

# On branch master
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
# modified:   a
#
# Changed but not updated:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
# modified:   a
#