test -d u-boot || git clone https://github.com/AsahiLinux/u-boot
cd u-boot
git fetch
+ # For tag, see https://github.com/AsahiLinux/PKGBUILDs/blob/main/uboot-asahi/PKGBUILD
git reset --hard asahi-v2022.07-2; git clean -f -x -d &> /dev/null
make apple_m1_defconfig
make -j `nproc`