In the testsuite, `test/Kernel_23/include` can be found as `../Kernel_23/include`, whereas in the Git layout it is `../../../Kernel_23/test/Kernel_23/include`.
In the testsuite, `test/Kernel_23/include` can be found as `../Kernel_23/include`, whereas in the Git layout it is `../../../Kernel_23/test/Kernel_23/include`.