I like using the --reference support in the additional clone options to provide a pre-cache for a remote git server, but would prefer that the cloned repositories not have the persistent 'alternates' referenced - even though the remotes are read only.

Would like to see a checkbox in the 'Additional Clone Behaviors' config section for the reference to say "Repack after Clone" to run 'git repack -a'. This would obviously negate space savings, but still accomplishes the goal of avoiding network transfer when the primary repository is on a remote slow link.