関連ワード:  how to undo a previous commit in git    how to undo a specific commit in git    how to revert a previous commit in git    how to remove a previous commit in git    how to undo a last commit in git    how to revert a specific commit in git    how to revert a last commit in git    how to remove a specific commit in git    how to revert a old commit in git    how to revert a specific commit in github