diff --git a/wp-includes/post.php b/wp-includes/post.php
index 8cb7287289..98b9092f16 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -852,13 +852,15 @@ function get_attached_file( $attachment_id, $unfiltered = false ) {
  * Updates attachment file path based on attachment ID.
  *
  * Used to update the file path of the attachment, which uses post meta name
- * '_wp_attached_file' to store the path of the attachment.
+ * `_wp_attached_file` to store the path of the attachment.
  *
  * @since 2.1.0
  *
  * @param int    $attachment_id Attachment ID.
  * @param string $file          File path for the attachment.
- * @return bool True on success, false on failure.
+ * @return int|bool Meta ID if the `_wp_attached_file` key didn't exist for the attachment.
+ *                  True on successful update, false on failure or if the `$file` value passed
+ *                  to the function is the same as the one that is already in the database.
  */
 function update_attached_file( $attachment_id, $file ) {
 	if ( ! get_post( $attachment_id ) ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d3354d2de2..c5a48a1581 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.8-alpha-59600';
+$wp_version = '6.8-alpha-59602';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.