einundzwanzig-portal/app/Console/Commands/Database/SyncGithubMeetups.php

<?php

namespace App\Console\Commands\Database;

use App\Models\Meetup;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Http;

class SyncGithubMeetups extends Command
{
    /**
     * The name and signature of the console command.
     * @var string
     */
    protected $signature = 'meetups:github-sync';

    /**
     * The console command description.
     * @var string
     */
    protected $description = 'Command description';

    /**
     * Execute the console command.
     * @return int
     */
    public function handle()
    {
        $response = Http::get('https://raw.githubusercontent.com/Einundzwanzig-Podcast/einundzwanzig.space/master/content/meetups.json');

        $meetups = $response->json();

        foreach ($meetups as $meetup) {
            $dbMeetup = Meetup::where('name', $meetup['name'])
                              ->first();
            if ($dbMeetup) {
                $dbMeetup->update([
                    'github_data' => $meetup,
                ]);
            }
        }

        return Command::SUCCESS;
    }
}