SVNKIT结帐异常：org.tigris.subversion.javahl.ClientException：svn：顶级工作副本的报告无效

Question

public String execute() throws Exception,SVNException {

        CVEHistory cve = new CVEHistory();
        System.out.println("in svn history");
        DAVRepositoryFactory.setup();
        String[] details = new String[10];
        //String url = "file:///D:/IDS/MSCVE/ADVISORIES/CVE-2010-3148.doc";
        String url = "https://xxxxxxxxxx/svn/SVN/CVE";


        String dstPath="D:/kiran12345";

        long startRevision = 0;
        long endRevision = -1; // HEAD (the latest) revision
        System.out.println("in svn history2");
        SVNRepository repository = null;



            System.out.println("before checkout");
            client.checkout(url, dstPath, null,null, false, false);
            System.out.println("after checkout");
}

错误：

org.tigris.subversion.javahl.ClientException: svn: Invalid report for top level of working copy