Update to upstream version '6.13.0+repack'
with Debian dir 4303dc081756728e5163c3f4df561bb1abaff3e5

This reverts commit aacdebdf.
This fix is not effective.

These big blob files are update often, and this harms Git repository.
Download them in build time.

Use specific commit ID files to deterministic build

XeLaTeX needs font links to build manuals.