misc_pterodactyl-panel/app/Http/Requests/Api/Application/Mounts/UpdateMountRequest.php

<?php

namespace Pterodactyl\Http\Requests\Api\Application\Mounts;

use Pterodactyl\Models\Mount;

class UpdateMountRequest extends StoreMountRequest
{
    public function rules(array $rules = null): array
    {
        return $rules ?? Mount::getRulesForUpdate($this->route()->parameter('mount'));
    }
}