# git gc
# git rev-parse -q --verify 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5^{commit}
9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
# git clean -qxdf
# < git log -1
# commit 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Aug 16 13:04:57 2020 -0700
# 
#     Linux 5.9-rc1
# < /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 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  corenet32_smp_defconfig
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xde5094) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xe00000)
Image Name:   Linux-5.9.0-rc1-47709-g9123e3a74
Created:      Mon Aug 17 12:15:48 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    6593354 Bytes = 6438.82 KiB = 6.29 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/linus_corenet32_smp_defconfig_powerpc-gcc4.9
# Build took: 0:06:50.900060