# git rev-parse -q --verify 42fd8df9d1d9c83046226e771a4f5f3d05a706ff^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linux-next master
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 42fd8df9d1d9c83046226e771a4f5f3d05a706ff^{commit}
42fd8df9d1d9c83046226e771a4f5f3d05a706ff
# git checkout -q -f -B kisskb 42fd8df9d1d9c83046226e771a4f5f3d05a706ff
# git clean -qxdf
# < git log -1
# commit 42fd8df9d1d9c83046226e771a4f5f3d05a706ff
# Author: Stephen Rothwell <sfr@canb.auug.org.au>
# Date:   Thu Feb 28 19:08:15 2019 +1100
# 
#     Add linux-next specific files for 20190228
#     
#     Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 42fd8df9d1d9c83046226e771a4f5f3d05a706ff
# < make -s -j 40 ARCH=s390 O=/kisskb/build/linux-next_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  allnoconfig
# make -s -j 40 ARCH=s390 O=/kisskb/build/linux-next_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:187:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/s390/mm/pgtable.c:413:15: warning: 'pmd_alloc_map' defined but not used [-Wunused-function]
/kisskb/src/kernel/sysctl.c:3331:12: warning: 'proc_dointvec_minmax_bpf_stats' defined but not used [-Wunused-function]
/kisskb/src/arch/s390/kernel/machine_kexec.c:145:22: warning: 'do_start_kdump' defined but not used [-Wunused-function]
Completed OK
# rm -rf /kisskb/build/linux-next_s390-allnoconfig_s390x
# Build took: 0:00:54.974617