[...]

  git checkout -b new_branch_name
HEAD is now at 27bf472... - merged 3.0.6 from PLD
fatal: HEAD does not point to a branch
Available branches: master
Searching for tag auto/ti/heartbeat-3.0.6-2...
Searching for tag auto/ti/heartbeat-3_0_6-2...
--2018-01-26 11:15:58--  http://df.tld-linux.org/distfiles/by-md5/8/a/8a5e1fc2b44750c052d1007226a84dbe/STABLE-3.0.6.tar.bz2
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 532796 (520K) [application/x-bzip2]
Saving to: 'STABLE-3.0.6.tar.bz2'
     0K .......... .......... .......... .......... ..........  9% 22.9M 0s
    50K .......... .......... .......... .......... .......... 19% 76.4M 0s
   100K .......... .......... .......... .......... .......... 28% 39.1M 0s
   150K .......... .......... .......... .......... .......... 38%  243M 0s
   200K .......... .......... .......... .......... .......... 48% 99.2M 0s
   250K .......... .......... .......... .......... .......... 57% 63.3M 0s
   300K .......... .......... .......... .......... .......... 67% 94.5M 0s
   350K .......... .......... .......... .......... .......... 76%  269M 0s
   400K .......... .......... .......... .......... .......... 86% 72.5M 0s
   450K .......... .......... .......... .......... .......... 96%  133M 0s
   500K .......... ..........                                 100%  210M=0.007s
2018-01-26 11:15:58 (69.4 MB/s) - 'STABLE-3.0.6.tar.bz2' saved [532796/532796]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/heartbeat-3.0.6-2.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 27bf472... - merged 3.0.6 from PLD
fatal: HEAD does not point to a branch
Writing git revision for tag auto/ti/heartbeat-3.0.6-2
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.64441
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf Heartbeat-3-0-STABLE-3.0.6
Begin-TLD-Builder-Info
Build-Time: user:0.96s sys:0.27s real:2.55s (faults io:109 non-io:125717)
Files queued for ftp:
    545478 heartbeat-3.0.6-2.src.rpm
       187 heartbeat-3.0.6-2.src.rpm.uploadinfo
End-TLD-Builder-Info