Concatenate the history of two Git repositories?
问题 I have an old Git repo, call it app . Then, after a year, I wanted to rebuild the app from scratch, so I made a new repo, call it app-2 . Now, I realize I should've just made a new branch or something, instead of a new repo, because I want to move the history of app-2 on top of app and then get rid of app-2 so that app now has all the history of app + app-2 . Is this possible to do? UPDATE: I tried "reseting" the app repo by removing all the files in app (except for the .git directory) and