I'm not directly involved enough to dig into the details here, but facebook/jemalloc currently says:
reply> This branch is 71 commits ahead of and 70 commits behind jemalloc/jemalloc:dev.
It looks like both have been independently updated.
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.
replyThe team probably sync'd the two after unarchiving the original.
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