# git rev-parse -q --verify 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f^{commit}
6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
# git checkout -q -f -B kisskb 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
# git clean -qxdf
# < git log -1
# commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Sep 12 16:28:37 2021 -0700
# 
#     Linux 5.15-rc1
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f
# < make -s -j 10 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 10 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 10 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:4870:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 10 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:06:19.089958