Pushes are rejected (pre-receive hook declined) since upgrade to 13.11

[Sebastiaan Couwenberg <sebastic@xs4all.nl>]

Hi,

Since the upgrade to 13.11 yesterday, pushes are rejected:

$ git push --all --verbose && git push --tags
Pushing to git@salsa.debian.org:debian-gis-team/gpsprune.git
Enter passphrase for key '/home/bas/.ssh/id_rsa':
Enumerating objects: 152, done.
Counting objects: 100% (113/113), done.
Delta compression using up to 4 threads
Compressing objects: 100% (66/66), done.
Writing objects: 100% (68/68), 52.54 KiB | 5.84 MiB/s, done.
Total 68 (delta 50), reused 0 (delta 0)
remote: GitLab: 500 Internal Server Error
To salsa.debian.org:debian-gis-team/gpsprune.git
 = [up to date]      buster-backports -> buster-backports
 = [up to date]      master -> master
 ! [remote rejected] experimental -> experimental (pre-receive hook
declined)
 ! [remote rejected] pristine-tar -> pristine-tar (pre-receive hook
declined)
 ! [remote rejected] upstream -> upstream (pre-receive hook declined)
updating local tracking ref 'refs/remotes/origin/buster-backports'
updating local tracking ref 'refs/remotes/origin/master'
error: failed to push some refs to
'git@salsa.debian.org:debian-gis-team/gpsprune.git'

What is causing the pre-receive hook to fail?

Kind Regards,

Bas

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