# git rev-parse -q --verify bbf5c979011a099af5dc76498918ed7df445635b^{commit}
bbf5c979011a099af5dc76498918ed7df445635b
already have revision, skipping fetch
# git checkout -q -f -B kisskb bbf5c979011a099af5dc76498918ed7df445635b
# git clean -qxdf
# < git log -1
# commit bbf5c979011a099af5dc76498918ed7df445635b
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Oct 11 14:15:50 2020 -0700
# 
#     Linux 5.9
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-ld --version
# < git log --format=%s --max-count=1 bbf5c979011a099af5dc76498918ed7df445635b
# < make -s -j 10 ARCH=xtensa O=/kisskb/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  allnoconfig
# make -s -j 10 ARCH=xtensa O=/kisskb/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
Completed OK
# rm -rf /kisskb/build/linus_xtensa-allnoconfig_xtensa
# Build took: 0:00:17.920590