Image partial_refresh

How do i incorporate partial refresh with img tag. I don’t see any documentation on img tag specific partial refresh.

I’m trying to do something like as below :

Kirki::add_field( 'airspace_kirki_config_id', array(
	'type'        => 'image',
	'settings'    => 'about_image',
	'label'       => esc_attr__( 'Image' , 'airspace'),
	'description' => esc_attr__( 'Upload your preferred image', 'airspace' ),
	'section'     => 'frontpage_section1',
	'default'     => get_template_directory_uri().'/images/wrapper-img.png',
	 'partial_refresh' => array(

        'about_image' => array(
           'selector' => 'img#about_image',
           'attr'     => 'src', //something like that

           'render_callback' => function(){

           	  return get_theme_mod('about_image');
           }

        )
	 )
) );

And front end is
<img id="about_image" src="<?php echo esc_url( get_theme_mod('about_image') ); ?>" alt="Img">

Also partial refresh blue pencil icon is not showing for img tag.