[...]

fatal: HEAD does not point to a branch
Available branches: AC-branch master
Searching for tag auto/ti/gtkglext-1.2.0-8...
Searching for tag auto/ti/gtkglext-1_2_0-8...
--2017-10-12 09:51:10--  http://distfiles.pld-linux.org/distfiles/by-md5/e/d/ed7ba24ce06a8630c07f2d0ee5f04ab4/gtkglext-1.2.0.tar.bz2
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: 703821 (687K) [application/x-bzip2]
Saving to: 'gtkglext-1.2.0.tar.bz2'
     0K .......... .......... .......... .......... ..........  7%  998K 1s
    50K .......... .......... .......... .......... .......... 14% 1.92M 0s
   100K .......... .......... .......... .......... .......... 21% 45.1M 0s
   150K .......... .......... .......... .......... .......... 29%  196M 0s
   200K .......... .......... .......... .......... .......... 36% 2.03M 0s
   250K .......... .......... .......... .......... .......... 43% 51.8M 0s
   300K .......... .......... .......... .......... .......... 50%  168M 0s
   350K .......... .......... .......... .......... .......... 58%  150M 0s
   400K .......... .......... .......... .......... .......... 65% 2.08M 0s
   450K .......... .......... .......... .......... .......... 72% 31.3M 0s
   500K .......... .......... .......... .......... .......... 80%  126M 0s
   550K .......... .......... .......... .......... .......... 87%  127M 0s
   600K .......... .......... .......... .......... .......... 94%  204M 0s
   650K .......... .......... .......... .......              100%  223M=0.1s
2017-10-12 09:51:10 (5.22 MB/s) - 'gtkglext-1.2.0.tar.bz2' saved [703821/703821]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/gtkglext-1.2.0-8.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at c5d516c... - x32 rebuild - release 8 (by relup.sh)
fatal: HEAD does not point to a branch
Writing git revision for tag auto/ti/gtkglext-1.2.0-8
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.13993
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf gtkglext-1.2.0
Begin-TLD-Builder-Info
Build-Time: user:1.16s sys:0.28s real:5.45s (faults io:0 non-io:101458)
Files queued for ftp:
    695873 gtkglext-1.2.0-8.src.rpm
       186 gtkglext-1.2.0-8.src.rpm.uploadinfo
End-TLD-Builder-Info