[...]

from available:
--with   :	
--without:	 lxc python3 qemu
Available branches: master
Searching for tag auto/ti/python-libvirt-4.6.0-1...
Searching for tag auto/ti/python-libvirt-4_6_0-1...
--2018-08-30 09:41:36--  http://df.tld-linux.org/distfiles/by-md5/7/2/72a5bfff95dafee0c2ceebb463f55149/libvirt-python-4.6.0.tar.gz
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 190306 (186K) [application/x-gzip]
Saving to: 'libvirt-python-4.6.0.tar.gz'
     0K .......... .......... .......... .......... .......... 26% 27.0M 0s
    50K .......... .......... .......... .......... .......... 53% 54.3M 0s
   100K .......... .......... .......... .......... .......... 80%  430M 0s
   150K .......... .......... .......... .....                100% 58.5M=0.003s
2018-08-30 09:41:36 (53.0 MB/s) - 'libvirt-python-4.6.0.tar.gz' saved [190306/190306]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/python-libvirt-4.6.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 37d9d64 - merged 4.6.0 from PLD
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	
--without:	 lxc python3 qemu
Writing git revision for tag auto/ti/python-libvirt-4.6.0-1
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.34925
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libvirt-python-4.6.0
Begin-TLD-Builder-Info
Build-Time: user:0.61s sys:0.07s real:1.15s (faults io:0 non-io:102816)
Files queued for ftp:
    195730 python-libvirt-4.6.0-1.src.rpm
       192 python-libvirt-4.6.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info