From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 19 Oct 2018 04:34:07 +0000 (+0900)
Subject: Merge branch 'jt/avoid-ls-refs'
X-Git-Tag: v2.20.0-rc0~150
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0527fbab689929de47ab3fa7baf1e7618ffa704f;p=thirdparty%2Fgit.git

Merge branch 'jt/avoid-ls-refs'

Over some transports, fetching objects with an exact commit object
name can be done without first seeing the ref advertisements.  The
code has been optimized to exploit this.

* jt/avoid-ls-refs:
  fetch: do not list refs if fetching only hashes
  transport: list refs before fetch if necessary
  transport: do not list refs if possible
  transport: allow skipping of ref listing
---

0527fbab689929de47ab3fa7baf1e7618ffa704f
diff --cc fetch-pack.c
index 49ab2666b9,15652b4776..bff05ee69e
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@@ -1612,21 -1598,7 +1612,21 @@@ struct ref *fetch_pack(struct fetch_pac
  	if (nr_sought)
  		nr_sought = remove_duplicates_in_refs(sought, nr_sought);
  
 +	if (args->no_dependents && !args->filter_options.choice) {
 +		/*
 +		 * The protocol does not support requesting that only the
 +		 * wanted objects be sent, so approximate this by setting a
 +		 * "blob:none" filter if no filter is already set. This works
 +		 * for all object types: note that wanted blobs will still be
 +		 * sent because they are directly specified as a "want".
 +		 *
 +		 * NEEDSWORK: Add an option in the protocol to request that
 +		 * only the wanted objects be sent, and implement it.
 +		 */
 +		parse_list_objects_filter(&args->filter_options, "blob:none");
 +	}
 +
- 	if (!ref) {
+ 	if (version != protocol_v2 && !ref) {
  		packet_flush(fd[1]);
  		die(_("no matching remote head"));
  	}