void checkoutBranch(List<String> branchNames, String repository, String targetDir = '', Boolean withChangelog = false) {
    def checkoutInfo = resolveScm(
        source: [$class       : 'GitSCMSource',
                 credentialsId: 'github-jenkins', id: '_',
                 remote       : "xyz.git",
                 traits       : [[$class: 'CleanAfterCheckoutTrait'],
                                 [$class: 'CleanBeforeCheckoutTrait'],
                                 [$class: 'GitLFSPullTrait'],
                                 [$class: 'jenkins.plugins.git.traits.BranchDiscoveryTrait'],
                                 headWildcardFilter(includes: branchNames.join(' '))]],
        targets: branchNames
    )

    checkoutRevision(checkoutInfo.getBranches().get(0).getName(), repository, targetDir, withChangelog)
}

def checkoutRevision(String revision, String repository, String targetDir = '', Boolean withChangelog = false) {
    def extensions = [[$class: 'CleanCheckout'],
                      [$class: 'CleanBeforeCheckout'],
                      [$class: 'CloneOption', reference: referenceRepository(repository), honorRefspec: true, noTags: true],
                      [$class: 'GitLFSPull']]

    if (withChangelog) {
        extensions << [$class: 'ChangelogToBranch', options: [compareRemote: 'origin', compareTarget: env.BRANCH_NAME]]
    }

    dir(targetDir) {
        def checkoutResult = checkout changelog: true, poll: false,
            scm: [$class                           : 'GitSCM',
                  branches                         : [[name: revision]],
                  browser                          : [$class: 'GithubWeb', repoUrl: "http://github.com/xyz/${repository}"],
                  doGenerateSubmoduleConfigurations: false,
                  extensions                       : extensions,
                  submoduleCfg                     : [],
                  userRemoteConfigs                : [[credentialsId: 'github-jenkins', url: "xyz.git"]]]
        sshagent(['github-jenkins']) {
            command 'git -c lfs.concurrenttransfers=50 lfs pull', label: 'Ensure git lfs objects are present'
        }
        return checkoutResult
    }
}