# git rev-parse -q --verify 6f72faf4a32303c8bdc6491186b79391e9cf0c7e^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/tip auto-latest
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 6f72faf4a32303c8bdc6491186b79391e9cf0c7e^{commit}
6f72faf4a32303c8bdc6491186b79391e9cf0c7e
# git checkout -q -f -B kisskb 6f72faf4a32303c8bdc6491186b79391e9cf0c7e
# git clean -qxdf
# < git log -1
# commit 6f72faf4a32303c8bdc6491186b79391e9cf0c7e
# Merge: e1ffa1e3f028 f8e48a3dca06
# Author: Ingo Molnar <mingo@kernel.org>
# Date:   Wed Oct 28 10:20:56 2020 +0100
# 
#     Merge branch 'locking/urgent'
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 6f72faf4a32303c8bdc6491186b79391e9cf0c7e
# < make -s -j 48 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 48 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 48 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 48 ARCH=x86_64 O=/kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/tip_x86_64-allnoconfig_x86_64-gcc4.9
# Build took: 0:00:22.234768