`git hf help` return:
```
usage: git hf <subcommand>
Available subcommands are:
init Initialize a new git repo with support for the branching model.
feature Manage your feature branches.
release Manage your release branches.
hotfix Manage your hotfix branches.
push Push the changes from your current branch (plus any new tags) back upstream.
pull Pull upstream changes down into your master, develop, and current branches.
update Pull upstream changes down into your master and develop branches.
version Shows version information.
Try 'git hf <subcommand> help' for details.
```
Added missed `help`, `push` and `pull` subcommands.