Renaming a branch both locally and remotely:

gistfile1.txt

# Rename the branch locally
git branch -m old-branch-name new-branch-name

# Push the renamed branch and set upstream
git push origin -u new-branch-name

# Delete the old branch from the remote repository
git push origin --delete old-branch-name

# Clean up local branches (optional)
git branch -d old-branch-name