[gnome-builder] git: recursively update submodules

[Christian Hergert <chergert src gnome org>]

commit cfb067f0323073c150be051d8d333b0e48046aab
Author: Christian Hergert <chergert redhat com>
Date:   Sat Apr 27 15:22:04 2019 -0700

    git: recursively update submodules
    
    Fixes #898

 src/plugins/git/gbp-git-submodule-stage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/git/gbp-git-submodule-stage.c b/src/plugins/git/gbp-git-submodule-stage.c
index 98ccd347e..5258c82af 100644
--- a/src/plugins/git/gbp-git-submodule-stage.c
+++ b/src/plugins/git/gbp-git-submodule-stage.c
@@ -57,7 +57,7 @@ gbp_git_submodule_stage_new (IdeContext *context)
   ide_subprocess_launcher_set_clear_env (launcher, FALSE);
   ide_subprocess_launcher_push_argv (launcher, "sh");
   ide_subprocess_launcher_push_argv (launcher, "-c");
-  ide_subprocess_launcher_push_argv (launcher, "git submodule init && git submodule update");
+  ide_subprocess_launcher_push_argv (launcher, "git submodule init && git submodule update --recursive");
 
   ide_pipeline_stage_launcher_set_launcher (IDE_PIPELINE_STAGE_LAUNCHER (self), launcher);