[...]

  git switch -c <new-branch-name>
Or undo this operation with:
  git switch -
Turn off this advice by setting config variable advice.detachedHead to false
HEAD is now at 59d6ab1 - release down to 1
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	
--without:	 threads
Available branches: master
Searching for tag auto/ti/perl-dirs-5.30.0-1...
Searching for tag auto/ti/perl-dirs-5_30_0-1...
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/perl-dirs-5.30.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 59d6ab1 - release down to 1
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	
--without:	 threads
Writing git revision for tag auto/ti/perl-dirs-5.30.0-1
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.14248
+ umask 022
+ cd /home/users/builder/rpm/BUILD
Begin-TLD-Builder-Info
Build-Time: user:0.76s sys:0.25s real:1.53s (faults io:11 non-io:65385)
Files queued for ftp:
      5711 perl-dirs-5.30.0-1.src.rpm
       188 perl-dirs-5.30.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info