I think the only two commands from this I like are `git sprout newbranch` and `git unpublish branch`. But only because I think `git checkout -b newbranch` and `git push origin :branch` are stupid syntaxes for doing what they do.
> git push origin master:refs/heads/experimental
Create the branch experimental in the origin repository by copying the current master branch. This form is only needed to create a new branch or tag in the remote repository when the local name and the remote name are different; otherwise, the ref name on its own will work.
So, a direct substitution of `git push origin :experimental` says
Create the branch :experimental in the origin repository by copying no branch
I definitely think that could use another layer of abstraction.