wp-content/themes/twentytwentytwo/inc/patterns/header-default.php

<?php
/**
 * Default header block pattern
 */
return array(
	'title'      => __( 'Default header', 'twentytwentytwo' ),
	'categories' => array( 'header' ),
	'blockTypes' => array( 'core/template-part/header' ),
	'content'    => '<!-- wp:group {"align":"full","layout":{"inherit":true}} -->
					<div class="wp-block-group alignfull"><!-- wp:group {"align":"wide","style":{"spacing":{"padding":{"bottom":"var(--wp--custom--spacing--large, 8rem)","top":"var(--wp--custom--spacing--small, 1.25rem)"}}},"layout":{"type":"flex","justifyContent":"space-between"}} -->
					<div class="wp-block-group alignwide" style="padding-top:var(--wp--custom--spacing--small, 1.25rem);padding-bottom:var(--wp--custom--spacing--large, 8rem)"><!-- wp:group {"layout":{"type":"flex"}} -->
					<div class="wp-block-group">
					<!-- wp:site-logo {"width":64} /-->

					<!-- wp:site-title {"style":{"typography":{"fontStyle":"italic","fontWeight":"400"}}} /--></div>
					<!-- /wp:group -->

					<!-- wp:navigation {"layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right"}} -->
					<!-- wp:page-list {"isNavigationChild":true,"showSubmenuIcon":true,"openSubmenusOnClick":false} /-->
					<!-- /wp:navigation --></div>
					<!-- /wp:group --></div>
					<!-- /wp:group -->',
);