Timothy Murphy wrote:

When I try to post an article to gmane.comp.version-control.git.user I get the error message "Could not write to file news.gmane.org".

I have no problem posting to other gmane newsgroups (like this one), and am told on the Git site that anyone can post to their list through gmane.

Can anyone solve this conundrum?

To answer my own query, I am told that this newsgroup is "unidirectional" which I take to mean "read-only". Apparently one has to send postings to the email address.