# git rev-parse -q --verify a72aa074b9089a69eff7a2d907217565d5a782d2^{commit}
a72aa074b9089a69eff7a2d907217565d5a782d2
already have revision, skipping fetch
# git checkout -q -f -B kisskb a72aa074b9089a69eff7a2d907217565d5a782d2
# git clean -qxdf
# < git log -1
# commit a72aa074b9089a69eff7a2d907217565d5a782d2
# Merge: be57aceaf54d d013cc800a2a
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Sep 19 22:21:38 2019 +1000
# 
#     Automatic merge of branches 'master', 'next' and 'fixes' into merge
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 a72aa074b9089a69eff7a2d907217565d5a782d2
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-merge_powernv_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# Added to kconfig CONFIG_NUMA=n
# yes \n | make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-merge_powernv_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-merge_powernv_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: vmlinux.o(.text+0x2fc8): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/powerpc-merge_powernv_defconfig+NO_NUMA_ppc64le-gcc5
# Build took: 0:04:25.738304