reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linus-next.git/commit/?id=2268a4ea672795a572dbbd7187117546ff262562
        git remote add sashal-linus-next https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linus-next.git
        git fetch --no-tags sashal-linus-next linus-next
        git checkout 2268a4ea672795a572dbbd7187117546ff262562

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash