Packing and Shipping Pods
Click to Expand for Important Packing and Shipping Tips!
Pack your HomePod well enough that it doesn't shake around, to prevent more damage like this. If you care about cosmetics, avoid wrapping the cable around the pod as it can leave imprints, and wrap the AC plug to keep it from scratching things.
I've found that the original HomePod boxes do not, in fact, protect HomePods well during shipping. It can lead to small cracks in the top glass, and power cables wrap around the mesh leaving indents.
Instead, I recommend no smaller than an 8x6x6 inch box with some lacking all around. If your box is buldging, it's probably too small.
You can remove and hang on to your power cable on your HomePod for simpler, safer packing if desired. To remove the power cable, first disconnect from power, then place the HomePod on a solid surface. Hold the HomePod down with one hand, then firmly grasp and pull or yank the power cable with your other hand. To reinstall the power cable, simply re-insert it the correct orientation, and push the connector into the HomePod until it makes a loud click.

Pack it Well, All Around
How to Disconnect & Reconnect Cable

Avoid Doing This