This applies to repositories available via a URL, of course. If your project is strictly local you can do all of the distributed stuff as long as you are "serving" the repository via http in some fashion, but it's probably pointless to do so.
Assuming you aren't running fossil as a high-powered version of
RCS, your use of
in your projects is up to you. fossil defaults to using a
If you have cloned a repository you will automatically sync with the
original if you commit changes to your local
version unless you customize your configuration.