関連ワード:  how to undo last merge commit in git    how to undo a merge commit in git    how to revert last merge commit in git    how to undo a merge commit in github    how to revert a merge commit in git    how to revert a merge commit in github    how to revert a merge commit in gitlab    how to revert last push commit in git    how to revert a push commit in git    how to revert a pushed merge commit in git