[...]

l-9.6-9.6.10-1
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.63952
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf postgresql-9.6.10
Begin-TLD-Builder-Info
Build-Time: user:1.34s sys:0.17s real:3.05s (faults io:4 non-io:216052)
Files queued for ftp:
  19888537 postgresql-9.6-9.6.10-1.src.rpm
       193 postgresql-9.6-9.6.10-1.src.rpm.uploadinfo
End-TLD-Builder-Info