Qt 6.4 QDateTime is broken with clang-cl when compiling with c++20

In file included from C:\Code\Qt\qt6-cmake-qml-plugin-example-project\build-qt6-cmake-qml-plugin-example-project-ClangCL_Desktop_Qt_6_4_0_MSVC2019_64bit-Release\DownloadManagerplugin_init.cpp:1:
In file included from C:\Qt\6.4.0\msvc2019_64\include\QtCore\QtPlugin:1:
In file included from C:\Qt\6.4.0\msvc2019_64\include\QtCore/qplugin.h:10:
In file included from C:\Qt\6.4.0\msvc2019_64\include\QtCore/qjsonobject.h:7:
In file included from C:\Qt\6.4.0\msvc2019_64\include\QtCore/qjsonvalue.h:10:
In file included from C:\Qt\6.4.0\msvc2019_64\include\QtCore/qcborvalue.h:8:
C:\Qt\6.4.0\msvc2019_64\include\QtCore/qdatetime.h(458,16): error: alias template 'sys_time' requires template arguments; argument deduction only allowed for class templates
        return std::chrono::sys_time(duration);