Amend a specific commit

Here is my situation: I had to do a dev that I cut into two different commits. I asked for a review from my team and got feedback on the first commit. I realized I didn’t know how to amend a commit that wasn’t the last one in the git history. I really didn’t want to create a specific commit for this fix, it wouldn’t be clean. I wanted to amend the first commit to have a clean git history. Here is the process I followed to be able to do that successfully :

Select the number of your commit, here we want to modify the commit bac653ad. So I had to run :

git rebase --interactive 'bbc643cd^'

In the default editor, you will have this kind of view :

pick bac653ad fix: first commit 
pick ac39035 feat: second commit

Change the name of the commit if you want, or keep it how it is and save. Then run :

git rebase --continue

Now you can push force :

git push --force

Your changes should have been added to the specific commit you wanted.

Shut out to StackOverflow for helping me solve this problem!