[...]

  git checkout -b new_branch_name
HEAD is now at c5fea4b... - add BR texlive-latex-cyrillic
fatal: HEAD does not point to a branch
Available branches: master
Searching for tag auto/ti/nickle-2.77-4...
Searching for tag auto/ti/nickle-2_77-4...
--2018-04-14 22:58:21--  http://distfiles.pld-linux.org/distfiles/by-md5/2/2/22f9775f069be403d110c72c8e888a55/nickle-2.77.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: 553206 (540K) [application/x-gzip]
Saving to: 'nickle-2.77.tar.gz'
     0K .......... .......... .......... .......... ..........  9% 1.21M 0s
    50K .......... .......... .......... .......... .......... 18% 2.42M 0s
   100K .......... .......... .......... .......... .......... 27%  198M 0s
   150K .......... .......... .......... .......... .......... 37% 86.3M 0s
   200K .......... .......... .......... .......... .......... 46% 2.49M 0s
   250K .......... .......... .......... .......... .......... 55% 88.7M 0s
   300K .......... .......... .......... .......... .......... 64% 82.9M 0s
   350K .......... .......... .......... .......... .......... 74%  100M 0s
   400K .......... .......... .......... .......... .......... 83% 2.60M 0s
   450K .......... .......... .......... .......... .......... 92%  341M 0s
   500K .......... .......... .......... ..........           100%  144M=0.1s
2018-04-14 22:58:21 (5.19 MB/s) - 'nickle-2.77.tar.gz' saved [553206/553206]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/nickle-2.77-4.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at c5fea4b... - add BR texlive-latex-cyrillic
fatal: HEAD does not point to a branch
Writing git revision for tag auto/ti/nickle-2.77-4
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.53437
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf nickle-2.77
Begin-TLD-Builder-Info
Build-Time: user:0.55s sys:0.11s real:5.71s (faults io:0 non-io:88734)
Files queued for ftp:
    559968 nickle-2.77-4.src.rpm
       183 nickle-2.77-4.src.rpm.uploadinfo
End-TLD-Builder-Info