+ * "git fetch" from a client that is mostly following the remote
+ needlessly told all of its refs to the server for both sides to
+ compute the set of objects that need to be transferred efficiently,
+ instead of stopping when the server heard enough. In a project with
+ many tags, this turns out to be extremely wasteful, especially over
+ the smart HTTP transport (sp/maint-{upload,fetch}-pack-stop-early~1).
+
+ * "git fetch" run from a repository that uses the same repository as
+ its alternate object store as the repository it is fetching from
+ did not tell the server that it already has access to objects
+ reachable from the refs in their common alternate object store,
+ causing it to fetch unnecessary objects (jc/maint-fetch-alt).
+