This problem is because the wrong branch is selected, so the subsequent submissions are submitted to an anonymous branch, and the entire state is free
Here are the steps I took to solve the problem
1. Check the latest commit number submitted in the free state
git branch -v
2. Create a temporary branch, switch to the branch after the creation is complete and check it out
git branch temp latest commit number
3. Switch to the branch IQ you want to merge
git checkout the name of the branch to merge the temporary branch with
4. Merge branches
git merge temp
5. Delete the temporary branch
git branch -d temp
6. Push the merged branch to the remote repository
git push origin branch name: remote branch name