[...]

state without impacting any branches by performing another checkout.
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 8be0e5e... - rebuild with current glib2 and gdk-pixbuf2 - rel 4
fatal: HEAD does not point to a branch
Available branches: AC-branch master
Searching for tag auto/ti/libview-0.6.6-4...
Searching for tag auto/ti/libview-0_6_6-4...
--2018-01-26 14:17:47--  http://distfiles.pld-linux.org/distfiles/by-md5/1/2/12b0a1e03013ae315d5f9088261d4f2b/libview-0.6.6.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: 304958 (298K) [application/x-bzip2]
Saving to: 'libview-0.6.6.tar.bz2'
     0K .......... .......... .......... .......... .......... 16% 1.08M 0s
    50K .......... .......... .......... .......... .......... 33% 2.16M 0s
   100K .......... .......... .......... .......... .......... 50% 65.0M 0s
   150K .......... .......... .......... .......... .......... 67% 44.8M 0s
   200K .......... .......... .......... .......... .......... 83% 2.35M 0s
   250K .......... .......... .......... .......... .......   100% 53.0M=0.09s
2018-01-26 14:17:47 (3.18 MB/s) - 'libview-0.6.6.tar.bz2' saved [304958/304958]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libview-0.6.6-4.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 8be0e5e... - rebuild with current glib2 and gdk-pixbuf2 - rel 4
fatal: HEAD does not point to a branch
Writing git revision for tag auto/ti/libview-0.6.6-4
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.26890
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libview-0.6.6
Begin-TLD-Builder-Info
Build-Time: user:0.98s sys:0.32s real:2.39s (faults io:0 non-io:106200)
Files queued for ftp:
    311424 libview-0.6.6-4.src.rpm
       185 libview-0.6.6-4.src.rpm.uploadinfo
End-TLD-Builder-Info