# git rev-parse -q --verify a67012412e5a820c44239af9712a1a6037b33fd4^{commit}
a67012412e5a820c44239af9712a1a6037b33fd4
already have revision, skipping fetch
# git checkout -q -f -B kisskb a67012412e5a820c44239af9712a1a6037b33fd4
# git clean -qxdf
# < git log -1
# commit a67012412e5a820c44239af9712a1a6037b33fd4
# Merge: 7e928df80d30 dc56367cb5db
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Jan 5 14:08:00 2019 -0800
# 
#     Merge tag 'trace-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
#     
#     Pull ftrace sh build fix from Steven Rostedt:
#      "It appears that the zero-day bot did find a bug in my sh build.
#     
#       And that I didn't have the bad code in my config file when I cross
#       compiled it, although there are a few other errors in sh that makes it
#       not build for me, I missed that I added one more"
#     
#     * tag 'trace-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
#       sh: ftrace: Fix missing parenthesis in WARN_ON()
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 a67012412e5a820c44239af9712a1a6037b33fd4
# < make -s -j 48 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# make -s -j 48 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/linus_x86_64_defconfig_x86_64-gcc8
# Build took: 0:01:54.304492