If I set in Jenkinsfile (pipeline job):

options { skipDefaultCheckout() }}}{{

then in steps in pipeline below, variable ${env.GIT_URL} appeared do not available. For example cannot complete step:

{{stage('Clean checkout') {
steps {
checkout([$class: 'GitSCM', branches: [[name: "master"]],
userRemoteConfigs: [[url: "${env.GIT_URL}"]]])
}
}}}

in this step variable ${env.GIT_URL} = null due to build console log.

But if you enable back default checkout, so delete:

options { skipDefaultCheckout() }}}{{

Then ${env.GIT_URL} became available. Is it expected behaviour?