# git rev-parse -q --verify 60771fc402877163d07569addadcf18b86acb455^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/stable linux-4.9.y
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 60771fc402877163d07569addadcf18b86acb455^{commit}
60771fc402877163d07569addadcf18b86acb455
# git checkout -q -f -B kisskb 60771fc402877163d07569addadcf18b86acb455
# git clean -qxdf
# < git log -1
# commit 60771fc402877163d07569addadcf18b86acb455
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Wed Mar 27 14:13:05 2019 +0900
# 
#     Linux 4.9.166
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 60771fc402877163d07569addadcf18b86acb455
# < make -s -j 20 ARCH=arm O=/kisskb/build/stable-4.9_versatile_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  versatile_defconfig
# make -s -j 20 ARCH=arm O=/kisskb/build/stable-4.9_versatile_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/stable-4.9_versatile_defconfig_arm
# Build took: 0:01:24.523536