Git modify history commit

REM: Be careful if this is amaster branch, or a branch which multiple people are working on

Say there are multiple commits:

1. HEAD
2. Commit2
3. Commit1

Say we want to modify "Commit2":

1. Run rebase, say commit id of Commit2 is 6fb592
   Be careful with the ^

git rebase -i 6fb592^

2. Edit (Pay attentation, edit the one you want to modify)
   In the new window, edit the value of $idOfCommit2, from pick to edit.
3. Make changes to that commit
4. git add

git add -u // If there is no new file within this change

5. git commit

git commit --amend --no-edit // If there is no need to update the commit message

OR

git commit --amend -m "Some now commit message"

6. Continue rebase

git rebase --continue

7. Check
   Check if the new commits are as expected
8. git push

git push -f // Since the git commit history is changed, need -f