# git rev-parse -q --verify 2f9dbf67b29af294856db3d9d8c490e892d8635a^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
warning: 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 2f9dbf67b29af294856db3d9d8c490e892d8635a^{commit}
2f9dbf67b29af294856db3d9d8c490e892d8635a
# git checkout -q -f -B kisskb 2f9dbf67b29af294856db3d9d8c490e892d8635a
# git clean -qxdf
# < git log -1
# commit 2f9dbf67b29af294856db3d9d8c490e892d8635a
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Mon Feb 22 01:53:56 2021 +0900
# 
#     kbuild: remove deprecated 'always' and 'hostprogs-y/m'
#     
#     These have no more user in the upstream code. The use of them has been
#     warned for a while for external modules. The migration is finished.
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 2f9dbf67b29af294856db3d9d8c490e892d8635a
# < make -s -j 10 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 10 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 10 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 10 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.9
# Build took: 0:00:30.675881