[PATCH 4/4] fetch-pack: mention server version with verbose output

Fetch-pack's verbose mode is more of a debugging mode (and
in fact takes two "-v" arguments to trigger via the
porcelain layer). Let's mention the server version as
another possible item of interest.

Signed-off-by: Jeff King <redacted>
---
Like I mentioned before, I'm lukewarm on this one, because I doubt
anybody actually uses this debugging information. If we drop it, it
makes sense to drop 3/4, too, which is just infrastructure for this.

 builtin/fetch-pack.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index bc7a0f9..bfe31ee 100644
--- a/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c

@@ -823,8 +823,14 @@ static struct ref *do_fetch_pack(int fd[2],
 			fprintf(stderr, "Server supports ofs-delta\n");
 	} else
 		prefer_ofs_delta = 0;
-	if (server_supports("agent"))
+	if (server_supports("agent")) {
 		agent_supported = 1;
+		if (args.verbose) {
+			char *v = server_feature_value("agent");
+			fprintf(stderr, "Server version is %s\n", v);
+			free(v);
+		}
+	}
 
 	if (everything_local(&ref, nr_match, match)) {
 		packet_flush(fd[1]);

-- 
1.7.12.rc2.4.g7f05cf9