[...]

 16600K .......... .......... .......... .......... .......... 95% 78.7M 0s
 16650K .......... .......... .......... .......... .......... 95% 1.56M 0s
 16700K .......... .......... .......... .......... .......... 96% 60.0M 0s
 16750K .......... .......... .......... .......... .......... 96% 64.0M 0s
 16800K .......... .......... .......... .......... .......... 96%  280M 0s
 16850K .......... .......... .......... .......... .......... 97% 72.9M 0s
 16900K .......... .......... .......... .......... .......... 97% 38.0M 0s
 16950K .......... .......... .......... .......... .......... 97% 56.9M 0s
 17000K .......... .......... .......... .......... .......... 97% 71.4M 0s
 17050K .......... .......... .......... .......... .......... 98% 74.7M 0s
 17100K .......... .......... .......... .......... .......... 98%  285M 0s
 17150K .......... .......... .......... .......... .......... 98% 85.8M 0s
 17200K .......... .......... .......... .......... .......... 99% 84.4M 0s
 17250K .......... .......... .......... .......... .......... 99% 70.7M 0s
 17300K .......... .......... .......... .......... .......... 99% 84.3M 0s
 17350K .......... .......... .......... .......... .......... 99% 1.56M 0s
 17400K .......... .                                          100%  220M=1.2s
2019-11-08 22:54:09 (13.8 MB/s) - 'Python-3.8.0.tar.xz' saved [17829824/17829824]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/python3-3.8.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at ee08c4b - use ipv4 socket for connection (as builders don't have v6 network)
fatal: HEAD does not point to a branch
Building python3.spec with the following conditional flags:
 --without tests
from available:
--with   :	 info verbose_tests
--without:	 optimizations system_mpdecimal <tests> tkinter
Writing git revision for tag auto/ti/python3-3.8.0-1
On detached HEAD. Use -r BRANCHNAME to override
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.12343
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf Python-3.8.0
Begin-TLD-Builder-Info
Build-Time: user:1.93s sys:0.59s real:7.71s (faults io:1 non-io:234942)
Files queued for ftp:
  17871294 python3-3.8.0-1.src.rpm
       185 python3-3.8.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info