Instead of trying to read info/refs file, which might not be present
(we did fallback to git-ls-remote), always use git-peek-remote in
git_get_references.
It is preparation for git_get_refs_info to also return references
info. We should not use info/refs for git_get_refs_info as the
repository is not served for http-fetch clients.
Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>