Add new logic for git that deploy via jenkin (multi-scm) and add as original code that I use on Laravel

getGitStatus.php

<?php

/**
 * Get Git Status via PHP (No execute function)
 * @author Nimit Suwannagate <ethaizone@hotmail.com>
 * Laravel Version
 */
function getGitStatus()
{
    $branch = null;
    $commit = null;
    $lastCheckoutTime = null;

    $headFile = app_path().'/../.git/HEAD';

    if (file_exists($headFile))
    {
        $head = file_get_contents($headFile);

        preg_match("#refs/heads/(.+)$#", $head, $matches);

        if (! empty($matches[1]))
        {
            $branch = $matches[1];

            $headLogsFile = app_path().'/../.git/logs/refs/heads/'.$branch;

            if (file_exists($headLogsFile))
            {
                $heads = file($headLogsFile);

                $heads = array_reverse($heads);

                if ( preg_match("#^[0-9a-f]+ ([0-9a-f]+) ([^<]+) <([^>]+)> ([0-9]+) (\+[0-9]{4})#", $heads[0], $matches))
                {
                    if (! empty($matches[1]))
                    {
                        $commit = $matches[1];
                        $timestamp = $matches[4];
                        $lastCheckoutTime = date("Y-m-d H:i:s", $timestamp);
                    }
                }

            }

            $headFile = app_path().'/../.git/refs/heads/'.$branch;
            if (! $commit && file_exists($headFile))
            {
                $head = file_get_contents($headFile);
                preg_match("#([0-9a-f]+)#", $head, $matches);

                if (! empty($matches[1]))
                {
                    $commit = $matches[1];
                }

            }
        } else {

            // new logic - for code that build via jenkin multiple scms
            $commit = trim($head);

            $headFile = app_path().'/../.git/FETCH_HEAD';

            if ($commit && file_exists($headFile))
            {
                $head = file_get_contents($headFile);
                // sd($head);
                preg_match("#{$commit}\t\tbranch '([^']+)'#", $head, $matches);

                if (! empty($matches[1]))
                {
                    $branch = $matches[1];
                }

            }

            if ($branch)
            {
                $headLogsFile = app_path().'/../.git/logs/HEAD';

                if (file_exists($headLogsFile))
                {
                    $heads = file($headLogsFile);

                    $heads = array_reverse($heads);

                    if ( preg_match("#^[0-9a-f]+ ([0-9a-f]+) ([^<]+) <([^>]+)> ([0-9]+) (\+[0-9]{4})#", $heads[0], $matches))
                    {
                        if (! empty($matches[1]) && $commit == $matches[1])
                        {
                            $commit = $matches[1];
                            $timestamp = $matches[4];
                            $lastCheckoutTime = date("Y-m-d H:i:s", $timestamp);
                        }
                    }

                }
            }
        }
    }


    return compact('branch', 'commit', 'lastCheckoutTime');
}