--- /dev/null
+After a `git annex copy --auto -t m3` I got this error:
+
+ (Recording state in git...)
+ error: unable to resolve reference refs/heads/git-annex: No such file or directory
+ fatal: Cannot lock the ref 'refs/heads/git-annex'.
+ git-annex: git [Param "update-ref",Param "refs/heads/git-annex",Param "d768b20f76ce40157214a713fb0ccb9cfc9134c2"] failed
+
+I did a `git annex sync m3` and got
+
+ [...]
+ push m3
+ Counting objects: 2976, done.
+ Delta compression using up to 2 threads.
+ Compressing objects: 100% (2052/2052), done.
+ Writing objects: 100% (2379/2379), 392.33 KiB, done.
+ Total 2379 (delta 1652), reused 460 (delta 316)
+ Auto packing the repository for optimum performance.
+ error: bad ref for refs/heads/git-annex
+ error: bad ref for refs/heads/git-annex
+ error: bad ref for refs/heads/git-annex
+ To /media/m3/annex
+ 87c82c5..06219eb git-annex -> synced/git-annex
+ be7ff5e..6625634 master -> synced/master
+ ok
+
+And then I ran the command git-annex was trying to run:
+
+ $ git update-ref refs/heads/git-annex d768b20f76ce40157214a713fb0ccb9cfc9134c2
+ error: Trying to write ref refs/heads/git-annex with nonexistent object d768b20f76ce40157214a713fb0ccb9cfc9134c2
+ fatal: Cannot update the ref 'refs/heads/git-annex'.
+
+`git fsck --full` gives no errors.
+
+What does this error mean? Should I be worried? Thanks.