Index: wp-includes/rest-api.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wp-includes/rest-api.php	(date 1572118458000)
+++ wp-includes/rest-api.php	(date 1572118458000)
@@ -356,14 +356,14 @@
 		global $wp_rewrite;
 
 		if ( $wp_rewrite->using_index_permalinks() ) {
-			$url = get_home_url( $blog_id, $wp_rewrite->index . '/' . rest_get_url_prefix(), $scheme );
+			$url = get_site_url( $blog_id, $wp_rewrite->index . '/' . rest_get_url_prefix(), $scheme );
 		} else {
-			$url = get_home_url( $blog_id, rest_get_url_prefix(), $scheme );
+			$url = get_site_url( $blog_id, rest_get_url_prefix(), $scheme );
 		}
 
 		$url .= $path;
 	} else {
-		$url = trailingslashit( get_home_url( $blog_id, '', $scheme ) );
+		$url = trailingslashit( get_site_url( $blog_id, '', $scheme ) );
 		// nginx only allows HTTP/1.0 methods when redirecting from / to /index.php
 		// To work around this, we manually add index.php to the URL, avoiding the redirect.
 		if ( 'index.php' !== substr( $url, 9 ) ) {
@@ -375,7 +375,7 @@
 
 	if ( is_ssl() ) {
 		// If the current host is the same as the REST URL host, force the REST URL scheme to HTTPS.
-		if ( $_SERVER['SERVER_NAME'] === parse_url( get_home_url( $blog_id ), PHP_URL_HOST ) ) {
+		if ( $_SERVER['SERVER_NAME'] === parse_url( get_site_url( $blog_id ), PHP_URL_HOST ) ) {
 			$url = set_url_scheme( $url, 'https' );
 		}
 	}