# git rev-parse -q --verify af42d3466bdc8f39806b26f593604fdc54140bcb^{commit}
af42d3466bdc8f39806b26f593604fdc54140bcb
already have revision, skipping fetch
# git checkout -q -f -B kisskb af42d3466bdc8f39806b26f593604fdc54140bcb
# git clean -qxdf
# < git log -1
# commit af42d3466bdc8f39806b26f593604fdc54140bcb
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Nov 17 14:47:30 2019 -0800
# 
#     Linux 5.4-rc8
# < /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 af42d3466bdc8f39806b26f593604fdc54140bcb
# < make -s -j 10 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  defconfig
# make -s -j 10 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
Completed OK
# rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa
# Build took: 0:00:50.916125