Disable SSL Certificate Check: 'unknown certificate lookup failure: 33'

I want to disable certificate verification when cloning a repo from GitLab.

The code I am using is:

var options = new CloneOptions();
options.FetchOptions.CredentialsProvider = (_url, _user, _cred) 
    => new UsernamePasswordCredentials 
    { 
        Username = "user", 
        Password = "token"
    };
options.FetchOptions.CertificateCheck += delegate (Certificate certificate, bool valid, string host)
{
    return true;
};
Repository.Clone(cloneUrl, cloneDirectoryPath, options);

But I got this error when cloning:
unknown certificate lookup failure: 33

Version of LibGit2Sharp (release number or SHA1)

v0.30.0

Operating system(s) tested; .NET runtime tested

Windows 10
C# net8.0

首先，按照所示方式使用 CloneOptions、FetchOptions.CertificateCheck 和 Repository.Clone，在 Windows 10、.NET 8.0 和 LibGit2Sharp v0.30.0 环境中复现该案例。跟踪证书回调以及“unknown certificate lookup failure: 33”的来源；当理解所报告的 GitLab 克隆行为并验证预期的证书检查处理方式后，即视为完成。