Let’s say you’ve accidentally added a password into git. Here’s how you remove it:

1. if you have only committed locally

a. and it’s your last commit

• just edit the file and run git commit -a --amend

b. and it’s a previous commit

• do an interactive rebase with git rebase -i origin/master
• change the pick to edit where you want to edit
• amend the commit with git commit --amend
• and continue with git rebase --continue

https://stackoverflow.com/questions/872565/remove-sensitive-files-and-their-commits-from-git-history

2. if you have committed and pushed to GitHub

https://blog.ostermiller.org/git-remove-from-history

https://blog.tinned-software.net/remove-files-from-git-history/