This should fix
Jul 20 07:16:12 bastion mirror-tarballs-start[21663]: Use of uninitialized value $algo in concatenation (.) or string at ./maintainers/scripts/copy-tarballs.pl line 80.
Jul 20 07:16:12 bastion mirror-tarballs-start[21663]: Use of uninitialized value in subroutine entry at ./maintainers/scripts/copy-tarballs.pl line 185.
Jul 20 07:16:13 bastion mirror-tarballs-start[21663]: error: unknown hash algorithm '' at ./maintainers/scripts/copy-tarballs.pl line 185.
(cherry picked from commit c48be3c17d2754d396790fb30405d625a562d1a5)