[...]

  git checkout -b new_branch_name
HEAD is now at 5068639... - added source0 md5
fatal: HEAD does not point to a branch
Available branches: AC-branch RA-branch master
--2015-07-28 10:35:07--  http://distfiles.pld-linux.org/distfiles/by-md5/2/f/2f3e705d59a0f9308ad9504b24400769/pdnsd-1.2.9a-par.tar.gz
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: 516061 (504K) [application/x-gzip]
Saving to: 'pdnsd-1.2.9a-par.tar.gz'
     0K .......... .......... .......... .......... ..........  9%  785K 1s
    50K .......... .......... .......... .......... .......... 19% 1.48M 0s
   100K .......... .......... .......... .......... .......... 29% 1.52M 0s
   150K .......... .......... .......... .......... .......... 39% 1.51M 0s
   200K .......... .......... .......... .......... .......... 49% 10.4M 0s
   250K .......... .......... .......... .......... .......... 59% 1.80M 0s
   300K .......... .......... .......... .......... .......... 69% 5.06M 0s
   350K .......... .......... .......... .......... .......... 79% 2.44M 0s
   400K .......... .......... .......... .......... .......... 89% 7.44M 0s
   450K .......... .......... .......... .......... .......... 99% 2.09M 0s
   500K ...                                                   100% 7564G=0.3s
2015-07-28 10:35:08 (1.95 MB/s) - 'pdnsd-1.2.9a-par.tar.gz' saved [516061/516061]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/pdnsd-1.2.9a-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 5068639... - added source0 md5
fatal: HEAD does not point to a branch
Writing git revision for tag auto/ti/pdnsd-1.2.9a-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.11364
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf pdnsd-1.2.9a
Begin-PLD-Builder-Info
Build-Time: user:4.23s sys:2.63s real:18.89s (faults io:15 non-io:294378)
Files queued for ftp:
    524814 pdnsd-1.2.9a-1.src.rpm
       184 pdnsd-1.2.9a-1.src.rpm.uploadinfo
End-PLD-Builder-Info