# git rev-parse -q --verify 75d9e2028153b25ace522a6d81042fee1ffe1c73^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git merge
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 75d9e2028153b25ace522a6d81042fee1ffe1c73^{commit}
75d9e2028153b25ace522a6d81042fee1ffe1c73
# git checkout -q -f -B kisskb 75d9e2028153b25ace522a6d81042fee1ffe1c73
# git clean -qxdf
# < git log -1
# commit 75d9e2028153b25ace522a6d81042fee1ffe1c73
# Merge: 21622a0d2023 f5d582777bcb a225f1567405
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Wed Dec 12 00:40:25 2018 +1100
# 
#     Automatic merge of branches 'master', 'next' and 'fixes' into merge
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-gcc --version
# < git log --format=%s --max-count=1 75d9e2028153b25ace522a6d81042fee1ffe1c73
# < make -s -j 48 ARCH=i386 O=/kisskb/build/powerpc-merge_i386_defconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  i386_defconfig
# make -s -j 48 ARCH=i386 O=/kisskb/build/powerpc-merge_i386_defconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  
You are building kernel with non-retpoline compiler.
Please update your compiler.
make[1]: *** [arch/x86/Makefile:311: checkbin] Error 1
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 48 ARCH=i386 O=/kisskb/build/powerpc-merge_i386_defconfig_i386 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/i386-linux/bin/i386-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-merge_i386_defconfig_i386
# Build took: 0:00:16.874383