# git gc
# git rev-parse -q --verify fb9daa6b26d01dbfb28b5306cc3ef6c6976dd72b^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/tip auto-latest
# git rev-parse -q --verify fb9daa6b26d01dbfb28b5306cc3ef6c6976dd72b^{commit}
fb9daa6b26d01dbfb28b5306cc3ef6c6976dd72b
# git checkout -q -f -B kisskb fb9daa6b26d01dbfb28b5306cc3ef6c6976dd72b
# git clean -qxdf
# < git log -1
# commit fb9daa6b26d01dbfb28b5306cc3ef6c6976dd72b
# Merge: 0746fe77304f 9d480158ee86
# Author: Ingo Molnar <mingo@kernel.org>
# Date:   Thu Apr 22 11:12:06 2021 +0200
# 
#     Merge branch 'perf/urgent'
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 fb9daa6b26d01dbfb28b5306cc3ef6c6976dd72b
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9
# Build took: 0:05:16.969654