Are there any more specific references what exactly has come to light here?

As it stands, this question just reads as a pretty cheap attempt to frame any and all environmental concerns or pro-renewable/anti-fossil fuel advocacy as russian propaganda. (which doesn't even make sense as gas itself is not renewable - greens usually see gas as the lesser evil compared to coal and nuclear but by no means as an end goal)

The german environmental and anti-nuclear movement predates the reunification, let alone russian gas deals or putin. While there might be some groups who are russian fronts or receive russian funding, the majority of the movement has quite strong motivations of its own.

This doesn't even take the "new" parts of the climate movement into account, such as Fridays for Future.