This depends a lot on best practices in your organizations whether you use public or enterprise Github or other source and version control services and software. It also depends how your organization deploy software into production using puppet, ansible, etc.
You can configure
packs_base_paths and you can just use
st2ctl reload to load the packs locally. If you are using git repositories, you can use
st2 pack install to install from git. Again, this depends on practices in your organization.
For more information on pack development and management, please review the docs at Packs — StackStorm 3.1.0 documentation.