git error "failed to push some refs to" when accessing windows share

Question

When I try to push my repo to a mounted windows share I got the following error message:

git push
Counting objects: 47, done.
Compressing objects: 100% (15/15), done.
Writing objects: 100% (25/25), 508.09 KiB | 88 KiB/s, done.
Total 25 (delta 18), reused 13 (delta 7)
fatal: error when closing sha1 file: Host is down
error: unpack failed: unpack-objects abnormal exit
To /dir/
 ! [remote rejected] master -> master (n/a (unpacker error))
error: failed to push some refs to /dir/

I tried a lot of things which I found on other posts but they didn't work for me:

git gc
git repack
git config --add core.sharedRepository group

I also changed the file permissions:

-rwxrwxrwx 0 marc marc 156 Sep 30 14:51 config
-rwxrwxrwx 0 marc marc  73 Apr 20  2012 description
-rwxrwxrwx 0 marc marc  23 Apr 20  2012 HEAD
drwxrwxrwx 0 marc marc   0 Apr 20  2012 hooks
drwxrwxrwx 0 marc marc   0 Apr 20  2012 info
drwxrwxrwx 0 marc marc   0 Sep 24 16:26 objects
drwxrwxrwx 0 marc marc   0 Apr 20  2012 refs

and there is also enough space left on the drive.

Answer 1

It seems that this error is caused by the git version which is in the standard apt repositiories from Ubuntu 12.4 LTS. After installing a newer version from another repo it works

 sudo add-apt-repository ppa:git-core/ppa
 sudo apt-get update
 sudo apt-get upgrade