When using "Advanced clone behaviors" -> "Shallow Clone" the git command line looks like this:

git fetch --tags --progress ssh://gerrit.example.com:29418/myrepo +refs/heads/:refs/remotes/origin/ --depth=1

The --tags causes everything (or darn near close) on our repo because we tag every build in Jenkins.

There should be a way to turn it off and it should probably be opt-in (but I'm not sure).