WLP838 is about as close as you're going to get; either that, or Wyeast 2308. I would use whichever one is cheaper, or try them both in a split batch to understand the differences.
Just used this yeast on a Munich Helles. Based on how quickly it fermented at 50F and the initial taste test result, I will definitely use this yeast again. For the maltier german lagers, this is my new go-to.
Supposedly it's not from a brewery, but from a German brewing science lab called Wissenschaftliche Station which was in Munich back in the '90', which is basically Weihenstephan now. There were two brewing labs back in the day, one in Berlin and the other in Munich.