How to commit & push local changes to separate (new) Git branch

git checkout -b new-branch

# more files can be added in this step too, wildcards supported
git add /path/to/locally/changed/file

git commit -m "commit message"

git show-branch

git push origin new-branch

Inspired by https://git-scm.com/book/en/v2/Git-Branching-Basic-Branching-and-Merging.