Git commit disappeared

"Hello, sorry for a stupid question, but after I removed my fork, merged commits seem to disappear oO Am I wrong about how pull requests work or something very strange happened? Or has it nothing to od with repository removal and it was somehow intended? Thanks." https://github.com/php/web-pres2/pull/1 The only explanation which comes to my mind would be cherrypicking + git push --force, but I see no sense in doing such a thing. Note: while those commits (at least at this particular moment) does still exist on Github (https://github.com/php/web-pres2/commit/bd23d3d3ca7d20262d94bf054e988a73f0d51c2e), they are not present in actual repo (http://git.php.net/?p=web/pres2.git;a=commit;h=bd23d3d3ca7d20262d94bf054e988a73f0d51c2e), so it is probably a cache. Is anyone able to explain this? Thanks in advance. Maciej. PS: Derick, I've CC'ed you, because I'm almost sure that whole situation happened after your commit, so you should be able to confirm or deny forced push case.