# git gc
# git rev-parse -q --verify 9e8a7b701479b322a44324f1160f2c33e47489e9^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/stable linux-4.9.y
# git rev-parse -q --verify 9e8a7b701479b322a44324f1160f2c33e47489e9^{commit}
9e8a7b701479b322a44324f1160f2c33e47489e9
# git checkout -q -f -B kisskb 9e8a7b701479b322a44324f1160f2c33e47489e9
# git clean -qxdf
# < git log -1
# commit 9e8a7b701479b322a44324f1160f2c33e47489e9
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Sat Oct 9 13:25:59 2021 +0200
# 
#     Linux 4.9.286
#     
#     Link: https://lore.kernel.org/r/20211008112713.941269121@linuxfoundation.org
#     Tested-by: Jon Hunter <jonathanh@nvidia.com>
#     Tested-by: Florian Fainelli <f.fainelli@gmail.com>
#     Tested-by: Shuah Khan <skhan@linuxfoundation.org>
#     Tested-by: Guenter Roeck <linux@roeck-us.net>
#     Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 9e8a7b701479b322a44324f1160f2c33e47489e9
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/stable-4.9_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  defconfig
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/stable-4.9_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 24 ARCH=arm64 O=/kisskb/build/stable-4.9_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/stable-4.9_arm64-defconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/stable-4.9_arm64-defconfig_arm64-gcc11
# Build took: 0:09:52.721604