# git rev-parse -q --verify a1b8638ba1320e6684aa98233c15255eb803fac7^{commit}
a1b8638ba1320e6684aa98233c15255eb803fac7
already have revision, skipping fetch
# git checkout -q -f -B kisskb a1b8638ba1320e6684aa98233c15255eb803fac7
# git clean -qxdf
# < git log -1
# commit a1b8638ba1320e6684aa98233c15255eb803fac7
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Sep 27 14:38:10 2020 -0700
# 
#     Linux 5.9-rc7
# < /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 a1b8638ba1320e6684aa98233c15255eb803fac7
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/linus_arm64-allnoconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  allnoconfig
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/linus_arm64-allnoconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 24 ARCH=arm64 O=/kisskb/build/linus_arm64-allnoconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/linus_arm64-allnoconfig_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_arm64-allnoconfig_arm64-gcc8
# Build took: 0:00:29.323089