SHELL

git amend commit message

git checkout branch_name
git commit --amend -m "Modified message"
# if previous commit is not pushed yet
git push
# or if previous comment was pushed in a previous commit:
git push --force-with-lease branch_name

amend commit

git commit --amend -m "an updated commit message"

git amend commit message

git commit --amend -m "New commit message for most recent commit"

git commit --amend with commit id

git commit --amend -m "new commit message"
$ git push --force-with-lease branch-name