# git rev-parse -q --verify a7e0bdf1b07ea6169930ec42b0bdb17e1c1e3bb0^{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 a7e0bdf1b07ea6169930ec42b0bdb17e1c1e3bb0^{commit}
a7e0bdf1b07ea6169930ec42b0bdb17e1c1e3bb0
# git checkout -q -f -B kisskb a7e0bdf1b07ea6169930ec42b0bdb17e1c1e3bb0
# git clean -qxdf
# < git log -1
# commit a7e0bdf1b07ea6169930ec42b0bdb17e1c1e3bb0
# Merge: 5bef2c7128e6 4c457e8cb75e
# Author: Ingo Molnar <mingo@kernel.org>
# Date:   Sat Jan 30 10:43:21 2021 +0100
# 
#     Merge branch 'irq/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 a7e0bdf1b07ea6169930ec42b0bdb17e1c1e3bb0
# < 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: 0:02:23.184722