When a fetch completes, could display:

• File path
• File size
• SHA256 (we already know it from the index)
• How long it took / stats on download speed

From feedback in #40 (comment)

If you want to pick this up, it might be a good idea to sketch out the proposed output & ideas first before coding it up.

Another suggestion, there could be opportunity here to separate events from rendering content; this could help support a GUI.