www.mikescher.com/www/commands/extendedgitgraph_refresh.php

<?php
require_once (__DIR__ . '/../internals/website.php');

/** @var PageFrameOptions $FRAME_OPTIONS */ global $FRAME_OPTIONS;
/** @var URLRoute $ROUTE */ global $ROUTE;
/** @var Website $SITE */ global $SITE;

set_time_limit(900); // 15min

$SITE->modules->ExtendedGitGraph()->update();
$SITE->modules->ExtendedGitGraph()->updateCache();