diff --git a/main.cpp b/main.cpp
index 79475e1..787df9f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -28,6 +28,8 @@
 #include <QCommandLineParser>
 #include <QtLogging>
 #include <QWindow>
+#include <git2.h>
+#include <git2/version.h>
 
 QtMessageHandler originalHandler = nullptr;
 
@@ -90,6 +92,18 @@ int main(int argc, char *argv[])
             engine.load(QUrl(QStringLiteral("qrc:/Update.qml")));
         } else {
             Control::instance()->init();
+
+#ifdef LIBGIT2_VERSION_CHECK
+#if LIBGIT2_VERSION_CHECK(1, 8, 1)
+            // OctoWoW is protected by BlazingFastWeb, which serves an HTML
+            // challenge to clients using the default git/* User-Agent.
+            // Use the curl User-Agent that the server accepts while keeping
+            // libgit2's normal Git Smart HTTP implementation unchanged.
+            git_libgit2_opts(GIT_OPT_SET_USER_AGENT_PRODUCT, "curl/8.21.0");
+            git_libgit2_opts(GIT_OPT_SET_USER_AGENT, "");
+#endif
+#endif
+
             qmlRegisterUncreatableType<Addon>("GitAddonsManager.engine",1,0,"Addon","");
             engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
             if (parser.isSet("oneshot")) {