This is Levitation, a project to convert Wikipedia database dumps into Git
repositories. It has been successfully tested with a small Wiki
(bar.wikipedia.org) having 12,200 articles and 104,000 revisions. Importing
those took 6 minutes on a Core 2 Duo 1.66 GHz. RAM usage is minimal: Pages
are imported one after the other, it will at most require the amount of memory
needed to keep all revisions of a single page into memory. You should be safe
with 1 GB of RAM.