More robust git ls-remote handling

orchestra/actions/clone.py

@@ -70,15 +70,16 @@ class CloneAction(Action):
             check_returncode=False
         ).stdout.decode("utf-8")
 
-        if os.path.exists(cache_filepath):
-            with open(cache_filepath, "rb") as f:
-                cached_data = json.loads(f.read())
-        else:
-            cached_data = {}
-
-        cached_data[self.build.qualified_name] = data
-        # TODO: prevent race condition, if two clone actions run at the same time
-        with open(cache_filepath, "w") as f:
-            json.dump(cached_data, f)
+        if data:
+            if os.path.exists(cache_filepath):
+                with open(cache_filepath, "rb") as f:
+                    cached_data = json.loads(f.read())
+            else:
+                cached_data = {}
+
+            cached_data[self.build.qualified_name] = data
+            # TODO: prevent race condition, if two clone actions run at the same time
+            with open(cache_filepath, "w") as f:
+                json.dump(cached_data, f)
 
         return data

orchestra/cmds/update.py

@@ -38,6 +38,12 @@ def handle_update(args, config: Configuration):
     if os.path.exists(ls_remote_cache):
         os.remove(ls_remote_cache)
 
+    for _, component in config.components.items():
+        for _, build in component.builds.items():
+            if build.clone:
+                logger.debug(f"Updating ls-remote cached info for {build.qualified_name}")
+                build.clone.get_remote_head()
+
     logger.info("Updating repositories")
     for git_repo in glob(os.path.join(config.sources_dir, "**/.git"), recursive=True):
         git_repo = os.path.dirname(git_repo)