[PATCH 3/3] Teach "git clone" to pack refs

[Johan Herland <johan@herland.net>]

In repos with many refs, it is unlikely that most refs will ever change.
This fact is already exploited by "git gc" by executing "git pack-refs"
to consolidate all refs into a single file.

When cloning a repo with many refs, it does not make sense to create the
loose refs in the first place, just to have the next "git gc" consolidate
them into one file. Instead, make "git clone" create the packed refs file
immediately, and forego the loose refs completely.

Signed-off-by: Johan Herland <johan@herland.net>
---
 builtin-clone.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/builtin-clone.c b/builtin-clone.c
index 0a9c873..01c595e 100644
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -18,6 +18,7 @@
 #include "transport.h"
 #include "strbuf.h"
 #include "dir.h"
+#include "pack-refs.h"
 
 /*
  * Overall FIXMEs:
@@ -313,8 +314,11 @@ static struct ref *write_remote_refs(const struct ref *refs, struct refspec *ref
 	get_fetch_map(refs, tag_refspec, &tail, 0);
 
 	for (r = local_refs; r; r = r->next)
-		update_ref(reflog,
-			   r->peer_ref->name, r->old_sha1, NULL, 0, DIE_ON_ERR);
+		add_extra_ref(r->peer_ref->name, r->old_sha1, 0);
+
+	pack_refs(PACK_REFS_ALL);
+	clear_extra_refs();
+
 	return local_refs;
 }
 
-- 
1.5.5.rc0.117.ga5237