UserWarning from gitlab Python bindings

I noticed this message in the logs of Jenkins "main" job:

2023-09-27 10:22:27,993:DEBUG   : https://gitlab.cern.ch:443 "GET /api/v4/projects/30597/repository/commits?until=2023-09-20T17%3A55%3A49&ref_name=master HTTP/1.1" 200 14716
/cvmfs/lhcbdev.cern.ch/nightly-environments/5ced04d9e2e8ad4a44b36e93198a8c2f88c23ebb2313ab50b202d5e241e8cb8d/lib/python3.11/site-packages/LbNightlyTools/MergeRequestBuilds.py:138: UserWarning: Calling a `list()` method without specifying `get_all=True` or `iterator=True` will return a maximum of 20 items. Your query returned 20 of many items. See https://python-gitlab.readthedocs.io/en/v3.15.0/api-usage.html#pagination for more details. If this was done intentionally, then this warning can be supressed by adding the argument `get_all=False` to the `list()` call. (python-gitlab: /cvmfs/lhcbdev.cern.ch/nightly-environments/5ced04d9e2e8ad4a44b36e93198a8c2f88c23ebb2313ab50b202d5e241e8cb8d/lib/python3.11/site-packages/gitlab/client.py:976)
  commit = project.commits.list(until=ref_date, ref_name=branch)[0]