# git rev-parse -q --verify 9ac3c2d4889c84e1fa030dc61ca5aeb6951f8776^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-stable-rc.git linux-4.19.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 9ac3c2d4889c84e1fa030dc61ca5aeb6951f8776^{commit}
9ac3c2d4889c84e1fa030dc61ca5aeb6951f8776
# git checkout -q -f -B kisskb 9ac3c2d4889c84e1fa030dc61ca5aeb6951f8776
# git clean -qxdf
# < git log -1
# commit 9ac3c2d4889c84e1fa030dc61ca5aeb6951f8776
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Sun Nov 11 14:16:04 2018 -0800
# 
#     Linux 4.19.2-rc1
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < git log --format=%s --max-count=1 9ac3c2d4889c84e1fa030dc61ca5aeb6951f8776
# < make -s -j 8 ARCH=sparc64 O=/kisskb/build/stable-rc-4.19_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 8 ARCH=sparc64 O=/kisskb/build/stable-rc-4.19_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/stable-rc-4.19_sparc64-defconfig_sparc64
# Build took: 0:03:36.804044