[...]

n 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 PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin HOME=/home/users/builder TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.13857
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf qtbase-opensource-src-5.3.1
Begin-PLD-Builder-Info
Build-Time: user:10.83s sys:3.57s real:23.75s (faults io:88 non-io:252436)
Files queued for ftp:
  47755691 qt5-qtbase-5.3.1-1.src.rpm
       188 qt5-qtbase-5.3.1-1.src.rpm.uploadinfo
End-PLD-Builder-Info