# git rev-parse -q --verify a8ad9a2434dc7967ab285437f443cae633b6fc1c^{commit}
a8ad9a2434dc7967ab285437f443cae633b6fc1c
already have revision, skipping fetch
# git checkout -q -f -B kisskb a8ad9a2434dc7967ab285437f443cae633b6fc1c
# git clean -qxdf
# < git log -1
# commit a8ad9a2434dc7967ab285437f443cae633b6fc1c
# Merge: fc74e0a40e4f 4bc5e64e6cf3
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Dec 27 08:58:35 2021 -0800
# 
#     Merge tag 'efi-urgent-for-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
#     
#     Pull EFI fix from Ard Biesheuvel:
#      "Another EFI fix for v5.16:
#     
#        - Prevent missing prototype warning from breaking the build under
#          CONFIG_WERROR=y"
#     
#     * tag 'efi-urgent-for-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
#       efi: Move efifb_setup_from_dmi() prototype from arch headers
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 a8ad9a2434dc7967ab285437f443cae633b6fc1c
# < make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# < make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
# make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/x86/um/Makefile:44: FORCE prerequisite is missing
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:01:01.894761