2020-02-19-UndoLastCommit

$ git commit -m "Something terribly misguided"             # (1)
$ git reset HEAD~                                          # (2)
<< edit files as necessary >>                              # (3)
$ git add ...                                              # (4)
$ git commit -c ORIG_HEAD                                  # (5)

1. Your last commit

2. Sencond step above, illustrates how to move your git-head one commit back.

3. Make changes - Remove changes which you didn't want.

4. Add your new changes.

5. Commit those changes ✅👍 - You're all set.