clone: teach recursive clones to respect -q

Teach 'git clone --recurse-submodules' to respect the '-q' option by
passing down the quiet flag to the process which handles cloning of
submodules.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/clone.c b/builtin/clone.c
index a6ae7d6..f81b123 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -764,6 +764,9 @@ static int checkout(int submodule_progress)
 		if (submodule_progress)
 			argv_array_push(&args, "--progress");
 
+		if (option_verbosity < 0)
+			argv_array_push(&args, "--quiet");
+
 		err = run_command_v_opt(args.argv, RUN_GIT_CMD);
 		argv_array_clear(&args);
 	}
diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index dcac364..e9c3335 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -1289,4 +1289,10 @@
 	test_must_fail git -C multisuper_clone config --get submodule.sub1.active
 '
 
+test_expect_success 'recursive clone respects -q' '
+	test_when_finished "rm -rf multisuper_clone" &&
+	git clone -q --recurse-submodules multisuper multisuper_clone >actual &&
+	test_must_be_empty actual
+'
+
 test_done