Cannot update website git repository for Eclipse DataEggs

Summary

I'm trying to publish the website at https://www.eclipse.org/dataeggs/

It used to work (several months ago), but now I get an wrong credentials error:

git push -u origin master
remote: error: branch refs/heads/master:        
remote: To push into this reference you need 'Push' rights.        
remote: User: ****        
remote: Contact an administrator to fix the permissions        
remote: 
remote: Processing changes: refs: 1
remote: Processing changes: refs: 1, done            
To ssh://git.eclipse.org:29418/www.eclipse.org/dataeggs.git
 ! [remote rejected] master -> master (prohibited by Gerrit: not permitted: update)
error: failed to push some refs to 'ssh://****@git.eclipse.org:29418/www.eclipse.org/dataeggs.git'

Not sure what happens, bbaldassari2kd should be recognized as a committer. The repository at [1] exists.

[1] https://git.eclipse.org/c/www.eclipse.org/dataeggs.git/

Steps to reproduce

In a shell, clone the repository at [1], commit a change and try to push it:

jenkins@ci4:~/www/privacy$ git commit -m 'test'
[master 0728db9] test
 1 file changed, 1 insertion(+), 1 deletion(-)
jenkins@ci4:~/www/privacy$ git push
Counting objects: 4, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (4/4), 351 bytes | 0 bytes/s, done.
Total 4 (delta 2), reused 0 (delta 0)
remote: Resolving deltas: 100% (2/2)
remote: error: branch refs/heads/master:
remote: To push into this reference you need 'Push' rights.
remote: User: bbaldassari2kd
remote: Contact an administrator to fix the permissions
remote: Processing changes: refs: 1, done    
To ssh://git.eclipse.org:29418/www.eclipse.org/dataeggs.git
 ! [remote rejected] master -> master (prohibited by Gerrit: not permitted: update)
error: failed to push some refs to 'ssh://bbaldassari2kd@git.eclipse.org:29418/www.eclipse.org/dataeggs.git'