Something

morph@AutoTesting:~/tmp/autotesting$ git push
Password: 
updating 'refs/heads/master'
  from d2e7cd3834d85d9816f3ee08105a6a96531b6c1d
  to   828feb833f7cb342bb183178283f9603dc3e5ade
 Also local refs/remotes/origin/master
Generating pack...
Done counting 5 objects.
Result has 3 objects.
Deltifying 3 objects...
 100% (3/3) done
Writing 3 objects...
 100% (3/3) done
Total 3 (delta 2), reused 0 (delta 0)
error: unable to create temporary sha1 filename ./objects/tmp_obj_A9oIbZ: Permission denied

fatal: failed to write object
unpack unpacker exited with error code
ng refs/heads/master n/a (unpacker error)
error: failed to push to 'ssh://bmsleight-guest@git.debian.org/git/debian-live/autotesting.git'