# git rev-parse -q --verify a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a^{commit}
a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
already have revision, skipping fetch
# git checkout -q -f -B kisskb a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
# git clean -qxdf
# < git log -1
# commit a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
# Merge: e4a0d77d3323 05e2c12a1fdd
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Thu Jun 4 11:36:23 2020 +0900
# 
#     Merge branch 'kbuild' into for-next
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 a2cf32b91f015436757fd0e68ee3eb3b3a29ac1a
# < make -s -j 8 ARCH=sparc64 O=/kisskb/build/kbuild_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# < make -s -j 8 ARCH=sparc64 O=/kisskb/build/kbuild_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  help
# make -s -j 8 ARCH=sparc64 O=/kisskb/build/kbuild_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  olddefconfig
# make -s -j 8 ARCH=sparc64 O=/kisskb/build/kbuild_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/kbuild_sparc64-defconfig_sparc64
# Build took: 0:02:48.095003