# git rev-parse -q --verify b5aef86e089a2d85a6d627372287785d08938cbe^{commit}
b5aef86e089a2d85a6d627372287785d08938cbe
already have revision, skipping fetch
# git checkout -q -f -B kisskb b5aef86e089a2d85a6d627372287785d08938cbe
# git clean -qxdf
# < git log -1
# commit b5aef86e089a2d85a6d627372287785d08938cbe
# Merge: 15b215e5aa29 93fb7f19985a
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Jan 5 18:35:02 2019 -0800
# 
#     Merge tag 'docs-5.0-fixes' of git://git.lwn.net/linux
#     
#     Pull documentation fixes from Jonathan Corbet:
#      "A handful of late-arriving documentation fixes"
#     
#     * tag 'docs-5.0-fixes' of git://git.lwn.net/linux:
#       doc: filesystems: fix bad references to nonexistent ext4.rst file
#       Documentation/admin-guide: update URL of LKML information link
#       Docs/kernel-api.rst: Remove blk-tag.c reference
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version
# < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-ld --version
# < git log --format=%s --max-count=1 b5aef86e089a2d85a6d627372287785d08938cbe
# < make -s -j 80 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 80 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>:1333:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
Completed OK
# rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa
# Build took: 0:00:27.253166