# git rev-parse -q --verify b1112139a103b4b1101d0d2d72931f2d33d8c978^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
warning: 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 b1112139a103b4b1101d0d2d72931f2d33d8c978^{commit}
b1112139a103b4b1101d0d2d72931f2d33d8c978
# git checkout -q -f -B kisskb b1112139a103b4b1101d0d2d72931f2d33d8c978
# git clean -qxdf
# < git log -1
# commit b1112139a103b4b1101d0d2d72931f2d33d8c978
# Author: Sergei Trofimovich <slyfox@gentoo.org>
# Date:   Tue Mar 17 00:07:18 2020 +0000
# 
#     Makefile: disallow data races on gcc-10 as well
#     
#     gcc-10 will rename --param=allow-store-data-races=0
#     to -fno-allow-store-data-races.
#     
#     The flag change happened at https://gcc.gnu.org/PR92046.
#     
#     Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
#     Acked-by: Jiri Kosina <jkosina@suse.cz>
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 b1112139a103b4b1101d0d2d72931f2d33d8c978
# < make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  defconfig
# < make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 48 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/kbuild_s390-defconfig_s390x-gcc4.9
# Build took: 0:03:56.805113