# git rev-parse -q --verify 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
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 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c^{commit}
4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c
# git checkout -q -f -B kisskb 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c
# git clean -qxdf
# < git log -1
# commit 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c
# Merge: b9231dfbcbc0 bc6a38513260
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat May 22 07:40:34 2021 -1000
# 
#     Merge tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block
#     
#     Pull block fixes from Jens Axboe:
#     
#      - Fix BLKRRPART and deletion race (Gulam, Christoph)
#     
#      - NVMe pull request (Christoph):
#           - nvme-tcp corruption and timeout fixes (Sagi Grimberg, Keith
#             Busch)
#           - nvme-fc teardown fix (James Smart)
#           - nvmet/nvme-loop memory leak fixes (Wu Bo)"
#     
#     * tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block:
#       block: fix a race between del_gendisk and BLKRRPART
#       block: prevent block device lookups at the beginning of del_gendisk
#       nvme-fc: clear q_live at beginning of association teardown
#       nvme-tcp: rerun io_work if req_list is not empty
#       nvme-tcp: fix possible use-after-completion
#       nvme-loop: fix memory leak in nvme_loop_create_ctrl()
#       nvmet: fix memory leak in nvmet_alloc_ctrl()
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:04:55.076170