[...]

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:
  git checkout -b new_branch_name
HEAD is now at 37ae2e2... - updated to 1.2.3 (bounds checking fixes)
fatal: HEAD does not point to a branch
Available branches: master
Searching for tag auto/ti/xorg-lib-libXtst-1.2.3-1...
Searching for tag auto/ti/xorg-lib-libXtst-1_2_3-1...
--2017-04-13 07:26:09--  http://distfiles.pld-linux.org/distfiles/by-md5/e/f/ef8c2c1d16a00bd95b9fdcef63b8a2ca/libXtst-1.2.3.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: 321819 (314K) [application/x-bzip2]
Saving to: 'libXtst-1.2.3.tar.bz2'
     0K .......... .......... .......... .......... .......... 15% 1.05M 0s
    50K .......... .......... .......... .......... .......... 31% 2.10M 0s
   100K .......... .......... .......... .......... .......... 47% 76.8M 0s
   150K .......... .......... .......... .......... .......... 63%  134M 0s
   200K .......... .......... .......... .......... .......... 79% 2.15M 0s
   250K .......... .......... .......... .......... .......... 95%  243M 0s
   300K .......... ....                                       100%  387M=0.09s
2017-04-13 07:26:09 (3.27 MB/s) - 'libXtst-1.2.3.tar.bz2' saved [321819/321819]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/xorg-lib-libXtst-1.2.3-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 37ae2e2... - updated to 1.2.3 (bounds checking fixes)
fatal: HEAD does not point to a branch
Writing git revision for tag auto/ti/xorg-lib-libXtst-1.2.3-1
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.98961
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libXtst-1.2.3
Begin-TLD-Builder-Info
Build-Time: user:0.54s sys:0.17s real:1.93s (faults io:0 non-io:90518)
Files queued for ftp:
    327513 xorg-lib-libXtst-1.2.3-1.src.rpm
       194 xorg-lib-libXtst-1.2.3-1.src.rpm.uploadinfo
End-TLD-Builder-Info