LibGit2Sharp Cloning from a network file share

I'm having issues cloning using the file transport when the remote is hosted on a network drive.

I downloaded the project and tried adding some test cases:

[Fact]
public void CanCloneALocalRepositoryFromANetworkDriveUri()
{
    var networkPath = @"file:///192.168.1.1/Share/TestRepo.git";
    var uri = new Uri(networkPath);
    AssertLocalClone(uri.AbsoluteUri, BareTestRepoPath);
}

That fails with:

LibGit2Sharp.LibGit2SharpException : failed to resolve path 'file://192.168.1.1/Share/TestRepo.git': The filename, directory name, or volume label syntax is incorrect.

I tried mapping a drive letter (Z:) to the share, and ran this:

[Fact]
public void CanCloneALocalRepositoryFromAMappedNetworkDrive()
{
    var networkPath = @"file:///Z:/TestRepo.git";
    var uri = new Uri(networkPath);
    AssertLocalClone(uri.AbsoluteUri, BareTestRepoPath);
}

That fails with:

LibGit2Sharp.LibGit2SharpException : failed to resolve path 'Z:/TestRepo.git': The system cannot find the path specified.

unless I set:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections

to a DWORD value of 1, as per this TechNet article - in which case the clone succeeds. However, this is not a viable solution in my situation, as it raises deployment issues in security-conscious environments.

It appears that LibGit2Sharp is not capable of cloning from a file UNC. Have I understood correctly, and if so is there any way to work around this?