Find references using internal code

        [MenuItem("CONTEXT/Component/Find References In Scene")]
        private static void OnSearchForReferencesToComponent(MenuCommand command)
        {
            var component = command.context as Component;
            if (component)
            {
                var searchFilter = "ref:" + component.GetInstanceID() + ":";
                foreach (SearchableEditorWindow sw in searchableWindows)
                {
                    if (sw.m_HierarchyType == HierarchyType.GameObjects)
                    {
                        sw.SetSearchFilter(searchFilter, SearchMode.All, false, false);
                        sw.m_HasSearchFilterFocus = true;
                        sw.Repaint();
                    }
                }
            }
        }

Via reflection

var view = SceneView.currentDrawingSceneView;
MethodInfo setSearchType = typeof(SearchableEditorWindow).GetMethod("SetSearchFilter", BindingFlags.NonPublic | BindingFlags.Instance);
bool setAll = false;
bool delayed = false;
setSearchType.Invoke(view, new object[] {"search filter", SearchableEditorWindow.SearchMode.All, setAll, delayed });