git error: failed to push some refs to remote

(Note: starting Oct. 2020, any new repository is created with the default branch main, not master. And you can rename existing repository default branch from master to main.The rest of this 2014 answer has been updated to use “main“) (The following assumes github.com itself is not down, as eri0o points out in the comments: see www.githubstatus.com to be sure) If the GitHub repo has seen new commits pushed to it, while …

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