FastGithub/FastGithub/appsettings/appsettings.fastly.json

{
  "FastGithub": {
    "DomainConfigs": {
      "*.fastly.net": {
        "TlsIgnoreNameMismatch": true
      },
      "*.*.fastly.net": {
        "TlsIgnoreNameMismatch": true
      },
      "*.*.*.fastly.net": {
        "TlsIgnoreNameMismatch": true
      }
    }
  }
}