reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git/commit/?id=b06b8c421485e0e96d7fd6aa614fb0b6f2778a03
        git remote add jejb-scsi https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git
        git fetch --no-tags jejb-scsi misc
        git checkout b06b8c421485e0e96d7fd6aa614fb0b6f2778a03

        # 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