# git rev-parse -q --verify a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a^{commit}
a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
already have revision, skipping fetch
# git checkout -q -f -B kisskb a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
# git clean -qxdf
# < git log -1
# commit a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
# Merge: e4a0d77d3323 05e2c12a1fdd
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Thu Jun 4 11:36:23 2020 +0900
# 
#     Merge branch 'kbuild' into for-next
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
# < make -s -j 20 ARCH=powerpc O=/kisskb/build/kbuild_ppc64e_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64e_defconfig
# < make -s -j 20 ARCH=powerpc O=/kisskb/build/kbuild_ppc64e_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 20 ARCH=powerpc O=/kisskb/build/kbuild_ppc64e_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 20 ARCH=powerpc O=/kisskb/build/kbuild_ppc64e_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xc18b88) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xd00000)
Image Name:   Linux-5.7.0-rc5-ga2cf32b91f01
Created:      Thu Jun  4 19:40:04 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    5066972 Bytes = 4948.21 KiB = 4.83 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/kbuild_ppc64e_defconfig_powerpc-gcc4.9
# Build took: 0:02:12.582207