freebsd-15-0-snap image in gcloud likely broken for Cirrus-CI usage

Hello,

Since a couple of days ago the Cirrus-CI tests using the
freebsd-15-0-snap instance have stopped working:

https://cirrus-ci.com/task/6652828465233920

It doesn't seem like the instance has even started, as the CI job has
not managed to start to clone the git repository in order to run the
build test.

The other tests that use the freebsd-13-3 and freebsd-14-1 images are
all working fine.

My suspicion is that the new builds from -current are somehow broken,
but I don't have a gcloud account myself, so cannot check whether the
freebsd-15-0-snap image is working as intended.  Maybe someone can
take a look and confirm whether the image is OK?

Thanks, Roger.