Does your brake caliper look like this one?:
If so they've been used on monkey and pit bikes for years. Perhaps someone here might recognise it and let you know what to do with those clips/pads.
Some of these calipers have pad retaining clips that can be a bit of a brain teaser to fit. The usual advice is to have a good look at them before you take the pads out, but it may be a bit late for you now...