extensions/git/src/uri.ts/toMergeUris
export function toMergeUris(uri: Uri): { base: Uri; ours: Uri; theirs: Uri } {
	return {
		base: toGitUri(uri, ':1'),
		ours: toGitUri(uri, ':2'),
		theirs: toGitUri(uri, ':3'),
	};
}