gistfile1.txt

        {
            "type": "package",
            "package": {
                "name": "my-fork/dynamic_entity_reference",
                "type": "drupal-module",
                "version": "8.1.0-beta1",
                "source": {
                    "url": "http://git.drupal.org/project/dynamic_entity_reference",
                    "type": "git",
                    "reference": "8.x-1.x"
                },
                "replace": {
                    "drupal/dynamic_entity_reference": "self.version"
                }
            }
        }