Jenkins Job DSL and MultiSCM plugin

My Job DSL / Multi SCM integration has suddenly stopped working. When i apply something like

multiscm {
    git {
        remote {
            name('origin')
            credentials('00000001-0000-0000-0000-000000000001')
            url('[email protected]:user/path.git')
        }
        branch('*/dev')
        extensions {
            cleanBeforeCheckout()
        }
    }
    git {
        remote {
            name('origin')
            credentials('00000001-0000-0000-0000-000000000001')
            url('[email protected]:user/path-2.git')
        }
        branch('master')
        extensions {
            relativeTargetDirectory("""path""")
        }
    }
}

i get following output:

<scm class="org.jenkinsci.plugins.multiplescms.MultiSCM">
    <scms>
        <scm class="hudson.plugins.git.GitSCM">
            <userRemoteConfigs>
                <hudson.plugins.git.UserRemoteConfig>
                    <name>origin</name>
                    <url>[email protected]:user/path.git</url>
                    <credentialsId>00000001-0000-0000-0000-000000000001</credentialsId>
                </hudson.plugins.git.UserRemoteConfig>
            </userRemoteConfigs>
            <branches>
                <hudson.plugins.git.BranchSpec>
                    <name>*/dev</name>
                </hudson.plugins.git.BranchSpec>
            </branches>
            <configVersion>2</configVersion>
            <disableSubmodules>false</disableSubmodules>
            <recursiveSubmodules>false</recursiveSubmodules>
            <doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations>
            <authorOrCommitter>false</authorOrCommitter>
            <clean>false</clean>
            <wipeOutWorkspace>false</wipeOutWorkspace>
            <pruneBranches>false</pruneBranches>
            <remotePoll>false</remotePoll>
            <ignoreNotifyCommit>false</ignoreNotifyCommit>
            <gitTool>Default</gitTool>
            <skipTag>true</skipTag>
            <extensions>
                <hudson.plugins.git.extensions.impl.CleanBeforeCheckout/>
            </extensions>
        </scm>
        <scm class="hudson.plugins.git.GitSCM">
            <userRemoteConfigs>
                <hudson.plugins.git.UserRemoteConfig>
                    <name>origin</name>
                    <url>
                        [email protected]:user/path-2.git
                    </url>
                    <credentialsId>00000001-0000-0000-0000-000000000001</credentialsId>
                </hudson.plugins.git.UserRemoteConfig>
            </userRemoteConfigs>
            <branches>
                <hudson.plugins.git.BranchSpec>
                    <name>master</name>
                </hudson.plugins.git.BranchSpec>
            </branches>
            <configVersion>2</configVersion>
            <disableSubmodules>false</disableSubmodules>
            <recursiveSubmodules>false</recursiveSubmodules>
            <doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations>
            <authorOrCommitter>false</authorOrCommitter>
            <clean>false</clean>
            <wipeOutWorkspace>false</wipeOutWorkspace>
            <pruneBranches>false</pruneBranches>
            <remotePoll>false</remotePoll>
            <ignoreNotifyCommit>false</ignoreNotifyCommit>
            <gitTool>Default</gitTool>
            <skipTag>true</skipTag>
            <extensions>
                <hudson.plugins.git.extensions.impl.RelativeTargetDirectory>
                    <relativeTargetDir>path</relativeTargetDir>
                </hudson.plugins.git.extensions.impl.RelativeTargetDirectory>
            </extensions>
        </scm>
    </scms>
</scm>

(sorry for verbosity)

And my job fails to check out anything at all. If i configure it manually through web UI, i get quite different xml, that checks out magnificently:

<scm class="org.jenkinsci.plugins.multiplescms.MultiSCM" plugin="[email protected]">
    <scms>
        <hudson.plugins.git.GitSCM plugin="[email protected]">
            <configVersion>2</configVersion>
            <userRemoteConfigs>
                <hudson.plugins.git.UserRemoteConfig>
                    <url>[email protected]:user/path.git</url>
                    <credentialsId>00000001-0000-0000-0000-000000000002</credentialsId>
                </hudson.plugins.git.UserRemoteConfig>
            </userRemoteConfigs>
            <branches>
                <hudson.plugins.git.BranchSpec>
                    <name>*/master</name>
                </hudson.plugins.git.BranchSpec>
            </branches>
            <doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations>
            <submoduleCfg class="list"/>
            <extensions>
                <hudson.plugins.git.extensions.impl.CleanBeforeCheckout/>
            </extensions>
        </hudson.plugins.git.GitSCM>
        <hudson.plugins.git.GitSCM plugin="[email protected]">
            <configVersion>2</configVersion>
            <userRemoteConfigs>
                <hudson.plugins.git.UserRemoteConfig>
                    <url>[email protected]:user/path.git</url>
                    <credentialsId>00000001-0000-0000-0000-000000000001</credentialsId>
                </hudson.plugins.git.UserRemoteConfig>
            </userRemoteConfigs>
            <branches>
                <hudson.plugins.git.BranchSpec>
                    <name>*/master</name>
                </hudson.plugins.git.BranchSpec>
            </branches>
            <doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations>
            <submoduleCfg class="list"/>
            <extensions/>
        </hudson.plugins.git.GitSCM>
    </scms>
</scm>

What happens here and how do i fix it? Are there any other options rather than direct configure blocks? I have tons of similar jobs and job DSL is my only option here.