# git rev-parse -q --verify 583615b27d2c360ed64226d7eec47ed81a0d5057^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 583615b27d2c360ed64226d7eec47ed81a0d5057^{commit}
583615b27d2c360ed64226d7eec47ed81a0d5057
# git checkout -q -f -B kisskb 583615b27d2c360ed64226d7eec47ed81a0d5057
# git clean -qxdf
# < git log -1
# commit 583615b27d2c360ed64226d7eec47ed81a0d5057
# Author: Masahiro Yamada <yamada.masahiro@socionext.com>
# Date:   Fri Jan 18 17:16:52 2019 +0900
# 
#     kbuild: descend to scripts/kconfig/ directly when syncconfig is needed
#     
#     The recursion of the top Makefile is inefficient.
#     Just descend to scripts/kconfig/.
#     
#     Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
# < /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 583615b27d2c360ed64226d7eec47ed81a0d5057
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_pseries_le_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pseries_le_defconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_pseries_le_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: modpost: Found 3 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/kbuild_pseries_le_defconfig_ppc64le-gcc5
# Build took: 0:02:33.806166