# git rev-parse -q --verify d0897090458211f9c6b2d7f5af87f4d3b0403f69^{commit}
d0897090458211f9c6b2d7f5af87f4d3b0403f69
already have revision, skipping fetch
# git checkout -q -f -B kisskb d0897090458211f9c6b2d7f5af87f4d3b0403f69
# git clean -qxdf
# < git log -1
# commit d0897090458211f9c6b2d7f5af87f4d3b0403f69
# Merge: 91dd51f6e7ce 10950929e994
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Dec 5 09:58:17 2018 -0800
# 
#     Merge tag 'for-4.20-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs fix from David Sterba:
#      "A patch in 4.19 introduced a sanity check that was too strict and a
#       filesystem cannot be mounted.
#     
#       This happens for filesystems with more than 10 devices and has been
#       reported by a few users so we need the fix to propagate to stable"
#     
#     * tag 'for-4.20-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
#       btrfs: tree-checker: Don't check max block group size as current max chunk size limit is unreliable
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < git log --format=%s --max-count=1 d0897090458211f9c6b2d7f5af87f4d3b0403f69
# < make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  defconfig
drivers/staging/mt7621-dts/Kconfig:4:warning: 'BUILTIN_DTB' has wrong type. 'select' only accept arguments of bool and tristate type
# make -s -j 48 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-  
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa
# Build took: 0:00:24.385130