warning: ignoring broken ref refs/remotes/origin/131.00stable

On one of my servers, I've started seeing the below error relating to the git updates of the CMM code:

---

Code:

warning: ignoring broken ref refs/remotes/origin/131.00stable
warning: ignoring broken ref refs/remotes/origin/131.00stable
fatal: ambiguous argument '@{u}': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
-------------------------------------------------------------
 Centmin Mod code updates available for /usr/local/src/centminmod
 List of updates: community.centminmod.com/forums/41/?prefix_id=19
-------------------------------------------------------------
 Do you want to update your local Centmin Mod Git code ? [y/n]: y

Updating Current Centmin Mod code branch via git
warning: ignoring broken ref refs/remotes/origin/131.00stable
warning: ignoring broken ref refs/remotes/origin/131.00stable
fatal: ambiguous argument '@{u}': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
 cd /usr/local/src/centminmod
 git stash
 git pull
 chmod +x centmin.sh
No local changes to save
error: object file .git/objects/89/c7740ee5e1ab69842ea11f50d9a22655720b03 is empty
fatal: cannot read existing object info 89c7740ee5e1ab69842ea11f50d9a22655720b03
fatal: fetch-pack: invalid index-pack output

##################### IMPORTANT #####################
 To complete update
##################### IMPORTANT #####################
 run:

  cd /usr/local/src/centminmod

 before invoking centmin.sh again
##################### IMPORTANT #####################

I've attempted to update the codebase several times, but reports the same issue each time.

 

That's fixed it