How to repair a shallow clone (?)

I share a bare repo with Sparkleshare which does an auto-synch. Now the synch had stopped, and trying to push to the central repo by hand gives this:

git push origin master fatal: protocol error: expected old/new/ref, got 'shallow 72fb4080921221293e28a97a0e8c78d6100c5186' fatal: The remote end hung up unexpectedly Counting objects: 4, done. Delta compression using up to 2 threads. Compressing objects: 100% (4/4), done. error: pack-objects died of signal 13 error: failed to push some refs to xxxxx

Both machines have Git >2.0.0

Is this a known issue/problem ?

I think I started to clone the repo in a shallow way (SparkleShare asked if I want to clone the complete history, and I probably answered "no" )

Is there a way to repair this situation ? (Except doing a complete re-clone ?)

Thanks for help