http://elegantcode.com/2011/06/18/git-on-windows-creating-a-network-shared-central-repository/
pushd \\remoteServer\git\Share\Folder\Path
mkdir MyGitRepo1
cd MyGitRepo1 git init --bare
popd
git remote add origin //remoteServer/git/Share/Folder/Path/MyGitRepo1 git push origin --all
Using this arrangement, can you issue pull requests?