HOWTO: In Renderpass change color attachment but keep depth attachment

I have a custom RenderPass that is supposed to use the default camera depth buffer but output to a separate color buffer. Figuring this out took longer than I'd like to admit, but sharing it here in case someone else stumbles over it.

RenderPass looks like this:

Code (CSharp):

1.         public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
2.         {
3.             var shaderPropertyId = Shader.PropertyToID("_MyShaderPropertyName");
4.  
5.             // Make new render target
6.             RenderTextureDescriptor colorTargetDesc = cameraTextureDescriptor;
7.             colorTargetDesc.colorFormat = RenderTextureFormat.RGFloat;
8.             colorTargetDesc.depthBufferBits = 0;
9.             cmd.GetTemporaryRT(shaderPropertyId, colorTargetDesc);
10.  
11.             ConfigureClear(ClearFlag.Color, new Color(1, 1, 0, 0));
12.            // Override color attachment, keep Depth ?
13.             ConfigureTarget(shaderPropertyId);
14.         }

But turns out that sets the depth buffer to null. I tried a couple of the texture enums (Depth, CameraTarget,..) but the only one that works is this:

Code (CSharp):

1. ConfigureTarget(shaderPropertyId, BuiltinRenderTextureType.CurrentActive);