You can use a public repo - we just wouldn't recommend it at this point in time, for the obvious reason of metadata leakage. We're currently thinking hard about

You can use a public repo - we just wouldn't recommend it at this point in time, for the obvious reason of metadata leakage. We're currently thinking hard about how to enable this while still leaving the nice properties of git merges alone - might be some kind of shadow mode with hashed identifiers in the end.