The accompanying publication explains it more: http://www.dmst.aueb.gr/dds/pubs/conf/2015-MSR-Unix-History/...
>Curating and processing available snapshots as well as old and modern configuration management repositories allows the reconstruction of a new synthetic Git repository that combines under a single roof most of the available data
Re:Unix History Repository
by bitcointicker on Friday January 29, 2016 @01:58PM
(#10997557)
Last page starts here:
https://github.com/dspinellis/unix-history-repo/commits/mast...
Fascinating!
https://github.com/dspinellis/unix-history-repo/commit/67174...