Cannot build from github on MacOS X

Here is the output log:

Cloning into bare repository '/Users/buildbot/work/gitlab/f6f95b82/0/bob/bob.conda/miniconda/conda-bld/git_cache/github.com/mne-tools/mne-python.git'...
fatal: unable to access 'https://github.com/mne-tools/mne-python.git/': SSL: can't load CA certificate file /opt/local/share/curl/curl-ca-bundle.crt

Coming from here: https://gitlab.idiap.ch/bob/bob.conda/-/jobs/124796

I don't understand why our curl bundle is not being taken into consideration given the environment variable seems correctly set:

CURL_CA_BUNDLE="${SCRIPTS_DIR}/cacert.pem"
export_env CURL_CA_BUNDLE

That is correctly printed on log message as can be checked. Maybe git needs something else now?