[...]

 15800K .......... .......... .......... .......... .......... 95% 72.3M 0s
 15850K .......... .......... .......... .......... .......... 95% 81.9M 0s
 15900K .......... .......... .......... .......... .......... 95% 93.5M 0s
 15950K .......... .......... .......... .......... .......... 96% 81.0M 0s
 16000K .......... .......... .......... .......... .......... 96% 69.5M 0s
 16050K .......... .......... .......... .......... .......... 96% 1.32M 0s
 16100K .......... .......... .......... .......... .......... 97% 13.5M 0s
 16150K .......... .......... .......... .......... .......... 97% 57.6M 0s
 16200K .......... .......... .......... .......... .......... 97% 85.3M 0s
 16250K .......... .......... .......... .......... .......... 97% 70.3M 0s
 16300K .......... .......... .......... .......... .......... 98%  416M 0s
 16350K .......... .......... .......... .......... .......... 98% 79.4M 0s
 16400K .......... .......... .......... .......... .......... 98% 81.7M 0s
 16450K .......... .......... .......... .......... .......... 99%  380M 0s
 16500K .......... .......... .......... .......... .......... 99%  103M 0s
 16550K .......... .......... .......... .......... .......... 99% 72.4M 0s
 16600K .......... .......... .......... .......... ..        100% 70.5M=1.5s
2019-01-18 13:31:58 (10.9 MB/s) - 'Python-3.7.2.tar.xz' saved [17042320/17042320]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/python3-3.7.2-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 9b97d58 - up to 3.7.2
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/python3-3.7.2-1
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.35387
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf Python-3.7.2
Begin-TLD-Builder-Info
Build-Time: user:1.37s sys:0.20s real:8.96s (faults io:4 non-io:226169)
Files queued for ftp:
  17082359 python3-3.7.2-1.src.rpm
       185 python3-3.7.2-1.src.rpm.uploadinfo
End-TLD-Builder-Info