I find that it helpful, knowing what other developers are working on. But I assume that others might find it invasive and too public.
I am wondering what others think about this.
If the goal is just you watching their work then maybe it could send it to a private channel only you're in.
There would also be code reviews (right?) so at least a subset of most relevant people should know what is happening before the commit occurs (after code review).
It's also a good idea to have something like gitweb available so anyone can quickly have a look at what has happened on the master repo.
To me pushed notifications seem like noise.