Before it would only package up git sources if you specified --package-all-sources.
Previously there was a bug where local git sources were not accounted for. Now it will package up git sources if it is local (to match expected behavior).
Though behavior shouldn’t have changed if your source points to a github URL (Snapcraft will simply pass through the remote unless you specified --package-all-sources).
If that’s not the behavior you are seeing, can you share your yaml?