# git rev-parse -q --verify c4726e774ed27680c418e138234dfd2b8e1e89ac^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
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 c4726e774ed27680c418e138234dfd2b8e1e89ac^{commit}
c4726e774ed27680c418e138234dfd2b8e1e89ac
# git checkout -q -f -B kisskb c4726e774ed27680c418e138234dfd2b8e1e89ac
# git clean -qxdf
# < git log -1
# commit c4726e774ed27680c418e138234dfd2b8e1e89ac
# Merge: d207ea8e74ff b04413330c77
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Aug 26 11:41:08 2018 -0700
# 
#     Merge tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
#     
#     Pull gcc plugin fix from Kees Cook:
#      "Lift gcc test into Kconfig. This is for better behavior when the
#       kernel is built with Clang, reported by Stefan Agner"
#     
#     * tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
#       gcc-plugins: Disable when building under Clang
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < git log --format=%s --max-count=1 c4726e774ed27680c418e138234dfd2b8e1e89ac
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0xD1A794A3
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# yes \n | make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64
# Build took: 0:02:23.351881