pipeline {
    agent any
    parameters { choice(name: 'CHOICES', choices: ['dev', 'test', 'prod'], description: '') }
    stages {
        stage('Checkout') {
            checkout([$class: 'GitSCM', branches: [[name: '*/param.CHOICES']], extensions: [], userRemoteConfigs: [[url: 'github.com/example']]])
        }
        stage('Apply') {
            steps { sh terraform apply }
        }
    }
}