$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v7.99-base-450-223/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v7.99-base-450-223/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard f19a393aec0d4ce7b0fa2f79e4e7ff3938a927b8
Downloading SOURCES/kernel-4.4.52.tar.gz (134 MB)
HEAD is now at f19a393 Definition of source files should not depend on current arch