How to fix "warning: symbolic ref is dangling" in git?

@lily 

To fix the "warning: symbolic ref is dangling" in git, you can follow the steps below:

1. Identify the dangling symbolic ref: Use the following command to find the dangling symbolic ref: git for-each-ref --format='%(refname)' --points-at=
2. Remove the dangling symbolic ref: Once you have identified the dangling symbolic ref, you can remove it using the command: git symbolic-ref -d
3. Update the symbolic ref: If the symbolic ref was pointing to a valid reference that was deleted or moved, you can update the symbolic ref to point to a new valid reference using the command: git symbolic-ref
4. Verify the fix: After performing the above steps, you can verify that the warning has been resolved by running the git fsck command: git fsck

By following these steps, you should be able to fix the "warning: symbolic ref is dangling" in git.