def clone2(String projAddr, String projCredentialId, String base_branch) {
    echo "-----> Check out project source from branch($base_branch)..."
    dir("projdir"){
        // git branch: "$base_branch", 
        //     credentialsId: "${projCredentialId}",
        //     url: "${projAddr}"
        checkout([$class: 'GitSCM',
                branches: [[name: "$base_branch"]],
                doGenerateSubmoduleConfigurations: false,
                extensions: [[$class: 'CleanBeforeCheckout'], [$class: 'CloneOption', depth: 1, noTags: false, reference: '', shallow: true, timeout: 240]],
                submoduleCfg: [],
                userRemoteConfigs: [[credentialsId: "${projCredentialId}", url: "${projAddr}"]]
            ])
        COMMIT_SHA = sh(returnStdout: true, script: 'git rev-parse --short HEAD').trim()
    }
}

def clone(Object gitConf, String base_branch) {
    
    echo "-----> Check out project source from branch($base_branch)..."
    dir("projdir"){
        git branch: "$base_branch", 
            credentialsId: "${gitConf.credentialId}",
            url: "${gitConf.address}"
        COMMIT_SHA = sh(returnStdout: true, script: 'git rev-parse --short HEAD').trim()
    }
}

return this