Actually the story says that they were told this by the mechanic. They were unable to save the driver.
“Then we saw that the crew’s driver-mechanic was severely injured and the others were dead. Once he awoke, the mechanic started yelling ‘nicht schießen’ [”do not shoot” in German],” the head of the reconnaissance team said.
“The mechanic repeatedly stated that he was not a mercenary but a Bundeswehr serviceman, and that he and the rest of the crew were members of the same unit of the German army,” the Russian fighter said, adding that while receiving medical aid, the German soldier named his brigade and its dislocation site.
The tank’s driver died from wounds minutes after he was found despite efforts to save him.”