[...]

error: HEAD does not point to a branch
fatal: @{u} - not something we can merge
No conditional flags passed
from available:
--with   :	
--without:	 apidocs static_libs tests
Available branches: AC-branch LIBNOTIFY_0_4 master
--2014-08-01 14:55:39--  http://distfiles.pld-linux.org/distfiles/by-md5/a/4/a4997019d08f46f3bf57b78e6f795a59/libnotify-0.7.6.tar.xz
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 280388 (274K) [application/octet-stream]
Saving to: 'libnotify-0.7.6.tar.xz'
     0K .......... .......... .......... .......... .......... 18%  156K 1s
    50K .......... .......... .......... .......... .......... 36%  130K 1s
   100K .......... .......... .......... .......... .......... 54%  130K 1s
   150K .......... .......... .......... .......... .......... 73%  142K 1s
   200K .......... .......... .......... .......... .......... 91%  142K 0s
   250K .......... .......... ...                             100%  149K=2.0s
2014-08-01 14:55:42 (140 KB/s) - 'libnotify-0.7.6.tar.xz' saved [280388/280388]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libnotify-0.7.6-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Version: 0.7.6
Release: 1
tag: auto/ti/libnotify-0.7.6-1
Searching for tag auto/ti/libnotify-0.7.6-1...
Everything up-to-date
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 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.81635
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libnotify-0.7.6
Begin-PLD-Builder-Info
Build-Time: user:2.38s sys:1.13s real:8.21s (faults io:77 non-io:166280)
Files queued for ftp:
    287320 libnotify-0.7.6-1.src.rpm
       187 libnotify-0.7.6-1.src.rpm.uploadinfo
End-PLD-Builder-Info