# git rev-parse -q --verify def9d2780727cec3313ed3522d0123158d87224d^{commit}
def9d2780727cec3313ed3522d0123158d87224d
already have revision, skipping fetch
# git checkout -q -f -B kisskb def9d2780727cec3313ed3522d0123158d87224d
# git clean -qxdf
# < git log -1
# commit def9d2780727cec3313ed3522d0123158d87224d
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Jan 19 16:02:49 2020 -0800
# 
#     Linux 5.5-rc7
# < /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 def9d2780727cec3313ed3522d0123158d87224d
# < make -s -j 24 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 24 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: 0:00:16.300979