node {
    // 检出第一个Git仓库
    dir('repo1') {
        git url: 'https://github.com/user/repo1.git', branch: 'main'
    }
    
    // 检出第二个Git仓库
    dir('repo2') {
        git url: 'https://github.com/user/repo2.git', branch: 'develop'
    }
    
    // 构建步骤...
}

pipeline {
    agent any
    
    stages {
        stage('Checkout') {
            steps {
                // 检出主仓库
                checkout([$class: 'GitSCM', 
                         branches: [[name: '*/master']],
                         extensions: [],
                         userRemoteConfigs: [[url: 'https://github.com/user/main-repo.git']]
                        ])
                
                // 检出子模块仓库到特定目录
                dir('submodules/module1') {
                    checkout([$class: 'GitSCM',
                             branches: [[name: '*/v1.0']],
                             extensions: [],
                             userRemoteConfigs: [[url: 'https://github.com/user/module1.git']]
                            ])
                }
            }
        }
        
        stage('Build') {
            steps {
                sh './build.sh'
            }
        }
    }
}