# git rev-parse -q --verify 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5^{commit}
9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
# git clean -qxdf
# < git log -1
# commit 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Aug 16 13:04:57 2020 -0700
# 
#     Linux 5.9-rc1
# < /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 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
# < make -s -j 8 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 8 ARCH=xtensa O=/kisskb/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  help
# make -s -j 8 ARCH=xtensa O=/kisskb/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  olddefconfig
# make -s -j 8 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: 0:00:20.450641