When Autosave is enabled, you’ll be able to use the option File → Revert to.
It’s also worth noting that you need to make and save changes locally for Autosave to pick them up and create a version, if you download a Workspace document version it will have no previous versions.
My colleague @dfmedrano already went through the process in the best possible way. If you ever need something quick to share, we also have this prototype that should also help!