Gist for my tutorial: Building a Gutenberg sidebar plugin Part 4: Adding form components. https://vanaf1979.nl/building-a-gutenberg-sidebar-plugin-part-4-adding-form-components/

BrowserTitleField-with-select.js

export default compose([

    withDispatch(( dispatch , props ) => {

        return {
            setMetaFieldValue: function( value ) {
                dispatch( 'core/editor' ).editPost( { meta: { metatags_browser_title: value } } );
            }
        }

    }),
    withSelect(( select , props ) => {
        
        return {
            metaFieldValue: select( 'core/editor' ).getEditedPostAttribute( 'meta' )[ 'metatags_browser_title' ],
        };

    }),

])( BrowserTitleField );