Adding Qt RO in qt5.git fails

CMake Error at qtbase/lib/cmake/Qt6Qml/Qt6QmlMacros.cmake:185 (add_library):
agent:2021/05/06 07:51:08 build.go:379:   add_library cannot create target "qmlqtimeexampleplugin" because another
agent:2021/05/06 07:51:08 build.go:379:   target with the same name already exists.  The existing target is a module
agent:2021/05/06 07:51:08 build.go:379:   library created in source directory
agent:2021/05/06 07:51:08 build.go:379:   "/Users/qt/work/qt/qt5/qtdeclarative/examples/qml/qmlextensionplugins".
agent:2021/05/06 07:51:08 build.go:379:   See documentation for policy CMP0002 for more details.
agent:2021/05/06 07:51:08 build.go:379: Call Stack (most recent call first):
agent:2021/05/06 07:51:08 build.go:379:   qtremoteobjects/examples/remoteobjects/plugins/CMakeLists.txt:23 (qt6_add_qml_module)
agent:2021/05/06 07:51:08 build.go:379: CMake Error at qtbase/lib/cmake/Qt6Qml/Qt6QmlMacros.cmake:429 (add_custom_command):
agent:2021/05/06 07:51:08 build.go:379:   TARGET 'qmlqtimeexampleplugin' was not created in this directory.