Unable to git pull

[Pierre Wieser <pwieser trychlos org>]

Hi,

It happens that I am unable to "git pull" from git.gnome.org.
Last successful access was 5 weeks ago.

Error message is:
  $ git pull --rebase 
  Received disconnect from 209.132.180.184: 2: Too many authentication failures for pwieser
  Disconnected from 209.132.180.184
  fatal: Could not read from remote repository.

  Please make sure you have the correct access rights
  and the repository exists.

~/.gitconfig is:
  [user]
        name = Pierre Wieser
        email = pwieser trychlos org
  [color]
        branch = auto
        diff = auto
        interactive = auto
        status = auto
  [url "ssh://pwieser git gnome org/git/"]
        insteadof = gnome:
  [push]
        default = simple

And relevant part of ~/.ssh/config is:
  Host git.gnome.org
        IdentityFile id_rsa_gnome
        User pwieser
        Compression yes
        CompressionLevel 3

My ssh key is unchanged (since years).
So is anyone able to help in this matter ?
Thanks in advance.

Regards,
Pierre