Harcode project visibility

spec/models/ci/build_spec.rb

@@ -1271,7 +1271,7 @@ describe Ci::Build do
         { key: 'CI_PROJECT_PATH_SLUG', value: project.full_path_slug, public: true },
         { key: 'CI_PROJECT_NAMESPACE', value: project.namespace.full_path, public: true },
         { key: 'CI_PROJECT_URL', value: project.web_url, public: true },
-        { key: 'CI_PROJECT_VISIBILITY', value: Gitlab::VisibilityLevel.string_level(project.visibility_level), public: true },
+        { key: 'CI_PROJECT_VISIBILITY', value: 'private', public: true },
         { key: 'CI_PIPELINE_ID', value: pipeline.id.to_s, public: true },
         { key: 'CI_CONFIG_PATH', value: pipeline.ci_yaml_file_path, public: true },
         { key: 'CI_REGISTRY_USER', value: 'gitlab-ci-token', public: true },