# git rev-parse -q --verify 31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c^{commit}
31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c
already have revision, skipping fetch
# git checkout -q -f -B kisskb 31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c
# git clean -qxdf
# < git log -1
# commit 31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Nov 10 16:17:15 2019 -0800
# 
#     Linux 5.4-rc7
# < /opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-gcc --version
# < /opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-ld --version
# < git log --format=%s --max-count=1 31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c
# < make -s -j 8 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32 CROSS_COMPILE=/opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-  or1ksim_defconfig
# make -s -j 8 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32 CROSS_COMPILE=/opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/linus_or1ksim_defconfig_or32
# Build took: 0:00:36.782846