[kstrauser]

I'm not directly involved enough to dig into the details here, but facebook/jemalloc currently says:

> This branch is 71 commits ahead of and 70 commits behind jemalloc/jemalloc:dev.

It looks like both have been independently updated.

[Xylakant]

This looks a lot as if the facebook/jemalloc repo inserted a single commit 70 commits ago and then rebased the changes in the original repo on top. Because the commit SHAs for the changes pulled in change you see this result.

[masklinn]

The team probably sync'd the two after unarchiving the original.