[PATCH v4 22/28] remote-curl: pass ref SHA-1 to fetch-pack as well

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/fetch-pack.c | 7 +++++++
 remote-curl.c        | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index 927424b..aa6e596 100644
--- a/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c
@@ -13,6 +13,13 @@ static void add_sought_entry_mem(struct ref ***sought, int *nr, int *alloc,
 				 const char *name, int namelen)
 {
 	struct ref *ref = xcalloc(1, sizeof(*ref) + namelen + 1);
+	unsigned char sha1[20];
+
+	if (namelen > 41 && name[40] == ' ' && !get_sha1_hex(name, sha1)) {
+		hashcpy(ref->old_sha1, sha1);
+		name += 41;
+		namelen -= 41;
+	}
 
 	memcpy(ref->name, name, namelen);
 	ref->name[namelen] = '\0';
diff --git a/remote-curl.c b/remote-curl.c
index 222210f..25d6730 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -719,7 +719,8 @@ static int fetch_git(struct discovery *heads,
 		struct ref *ref = to_fetch[i];
 		if (!ref->name || !*ref->name)
 			die("cannot fetch by sha1 over smart http");
-		packet_buf_write(&preamble, "%s\n", ref->name);
+		packet_buf_write(&preamble, "%s %s\n",
+				 sha1_to_hex(ref->old_sha1), ref->name);
 	}
 	packet_buf_flush(&preamble);
 
-- 
1.8.5.1.25.g8667982