add possible work-around / solution

doc/articles/pitfalls.md

@@ -9,6 +9,8 @@
 The [`repositories`](04-schema.md#repositories) configuration property is defined as [root-only]
 (04-schema.md#root-package). It is not inherited. You can read more about the reasons behind this in the "[why can't
 composer load repositories recursively?](articles/why-can't-composer-load-repositories-recursively.md)" article.
+The simplest work-around to this limitation, is moving or duplicating the `repositories` definition to your root
+composer.json.
 
 ## I have locked a dependency to a specific commit but get unexpected results.
 
@@ -22,3 +24,5 @@ frequently overlooked:
 > before the hash. Because of that in some cases it will not be a practical
 > workaround, and you should always try to switch to tagged releases as soon
 > as you can.
+
+There is no simple work-around to this limitation. It is therefor strongly recommended that you do not use it.