Re-use Commit Message in Git

To re-use a commit’s message verbatim, including authorship and timestamp information, use -C <commit>:

git commit --amend -C @

Pro Tip: @ is a synonym for HEAD, the currently checked-out commit.

To reset the date as well, use --date now; to reset the author too, use --reset-author:

git commit --amend -C @ --date now
git commit --amend -C @ --reset-author
git commit --amend -C @ --date now --reset-author

If you want to use an existing commit’s message and also want a chance to edit it, use -c <commit>:

git commit --amend -c @

-c is compatible with --date and --reset-author too:

git commit --amend -c @ --date now
git commit --amend -c @ --reset-author
git commit --amend -c @ --date now --reset-author