How do I rename a branch in Git?

How do I rename a branch in Git?

You can rename a branch in Git using the command git branch -m old-branch-name new-branch-name. What branch are you trying to rename?

I'm trying to rename my feature branch from 'feature/login' to 'feature/authentication'.

You can do that by running git branch -m feature/login feature/authentication. Make sure you're not on the branch you're renaming!

What if I already pushed the old branch to the remote repository?

In that case, after renaming the branch locally, you'll need to delete the old branch from the remote using git push origin --delete feature/login and then push the new branch with git push origin feature/authentication.