Corrupted bundle files when upgrading from 8.8.5 to 8.15.2

Hello,

Previous to this upgrade, we were using the backup files to transfer via sneakernet our repos between two systems. However, after the upgrade to 8.15.2, it looks like our .bundle files seem to have “broken”. In particular, we used to be able to manually view the files in the bundle by “untarring” the bundle. However, in the latest version we don’t seem to be able to do that.

Did something change and/or is there a bug in 8.15.2?

Thank you all in advance!

-Alex