	protected function GetOrderedRefs($refList, $type, $order, $count = 0, $skip = 0)
	{
		if (!$refList)
			return;

		if (empty($type) || empty($order))
			return null;

		$args = array();
		$args[] = '--sort=' . $order;
		$args[] = '--format="%(refname)"';
		if ($count > 0) {
			if ($skip > 0) {
				$args[] = '--count=' . ($count + $skip);
			} else {
				$args[] = '--count=' . $count;
			}
		}
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.