[...]

 15800K .......... .......... .......... .......... .......... 95% 37.0M 0s
 15850K .......... .......... .......... .......... .......... 95% 67.4M 0s
 15900K .......... .......... .......... .......... .......... 95% 81.8M 0s
 15950K .......... .......... .......... .......... .......... 96% 66.9M 0s
 16000K .......... .......... .......... .......... .......... 96% 76.8M 0s
 16050K .......... .......... .......... .......... .......... 96% 73.9M 0s
 16100K .......... .......... .......... .......... .......... 97% 1.17M 0s
 16150K .......... .......... .......... .......... .......... 97% 73.2M 0s
 16200K .......... .......... .......... .......... .......... 97% 40.5M 0s
 16250K .......... .......... .......... .......... .......... 97% 61.4M 0s
 16300K .......... .......... .......... .......... .......... 98% 94.7M 0s
 16350K .......... .......... .......... .......... .......... 98% 62.9M 0s
 16400K .......... .......... .......... .......... .......... 98% 69.8M 0s
 16450K .......... .......... .......... .......... .......... 99% 1.18M 0s
 16500K .......... .......... .......... .......... .......... 99% 96.5M 0s
 16550K .......... .......... .......... .......... .......... 99% 58.1M 0s
 16600K .......... .......... .......... .......... ..        100% 63.9M=1.9s
2019-01-17 08:26:03 (8.35 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.76642
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf Python-3.7.2
Begin-TLD-Builder-Info
Build-Time: user:1.84s sys:0.43s real:9.81s (faults io:0 non-io:225988)
Files queued for ftp:
  17082352 python3-3.7.2-1.src.rpm
       185 python3-3.7.2-1.src.rpm.uploadinfo
End-TLD-Builder-Info