Re: [BUGFIX PATCH 2/2] fast-export: use an unsorted string list for extra_refs

> 
> The list extra_refs contains tags and the objects referenced by them,
> so that they can be handled at the end.  When a tag references a
> commit, that commit is added to the list using the same name.
> 
> Also, the function handle_tags_and_duplicates() relies on the order
> the items were added to extra_refs, so clearly we do not want to
> use a sorted list here.