Why aren't GIT hooks executed on a Windows?

I installed Bonobo Git Server on Windows 2008 R2 Server machine. I created a repository and put post-receive.bat file in D:\Inetpub\Bonobo.Git.Server\App_Data\Repositories\REPO\hooks directory.

This is the content of the file:

#!/D/Inetpub/Bonobo.Git.Server/App_Data/Git/sh.exe

BINPATH="/D/Inetpub/Bonobo.Git.Server/App_Data/Git/"
REPOPATH="/D/Inetpub/Bonobo.Git.Server/App_Data/Repositories/REPO/"
GIT="${BINPATH}git"

# Change working directory to the repo root
cd $REPOPATH

read oldrev
read newrev
read refname

branch=$($GIT rev-parse --symbolic --abbrev-ref $refname)

if [ "master" == "$branch" ]; then
    echo "receive $branch $refname" >> "${REPOPATH}hookstest.log"
fi

If I execute this file from shell and type "whatever whatever master", then the file "receive master master" is added to hookstest.log. However, when I push changes to REPO the file is not updated, just as if it wasn't executed.

I have no idea where to look for errors that occurred. Most of the linux tutorials mention that the file must have +x flag. This obviously does not exist on Windows, but I checked and the user that runs Bonobo Git Server in IIS has execution rights on the batch file.

I was also hesitating about the name of the file, so I copied it and removed .bat extension. That did not help either. Any idea how I can get the hook working on the Windows Server?

EDIT

As suggested by @crashmstr I created a batch file (one with extension and one without) that contained:

date /t >> D:\Inetpub\Bonobo.Git.Server\App_Data\Repositories\REPO\testhooks.txt

This did not work either, even though the file was created, when I executed the file manually.

Solution

I am not sure what was the problem. In the end I got it working by creating a file D:\Inetpub\Bonobo.Git.Server\App_Data\Repositories\REPO\hooks\post-receive (no extension) with the following content:

#!/D/Inetpub/Bonobo.Git.Server/App_Data/Git/sh.exe

echo "BEGIN post-receive script"

APPPATH="/D/Inetpub/Bonobo.Git.Server/App_Data"
SVN="/D/csvn/bin/svn"

REPOPATH="$APPPATH/Repositories/REPO"
SVNSYNCPATH="$APPPATH/SVN-sync"
GIT="$APPPATH/Git/git"

mapping["master"]="trunk"
mapping["develop"]="development"

# Change working directory to the repo root
cd $REPOPATH

read oldrev newrev refname    

echo "oldrev - $oldrev"
echo "newrev - $newrev"
echo "refname - $refname"

branch=$($GIT rev-parse --symbolic --abbrev-ref $refname)
echo "branch - $branch"
echo ""

if [ "master" == "$branch" ]; then
    result=($($GIT diff $oldrev $newrev --name-status))
    echo "Detected $((${#result[@]}/2)) changes:"

    idx=0
    while [ $idx -lt ${#result[@]} ]
    do      
        status=${result[$idx]}
        filename=${result[$(($idx+1))]}
        echo -n "$status - $filename "

        case $status in
            "A")
                echo "added"
                ;;
            "M")
                echo "updated"
                ;;
            "D")
                echo "deleted"
                ;;
            "R")
                echo "renamed"
                ;;
            "C")
                echo "copied"
                ;;
            *)
                echo "unknown status"
                ;;
        esac

        idx=$(($idx+2))
    done
fi
echo ""

echo "END post-receive script"