extensions/git/src/repository.ts/Repository/buffer
class Repository:	async buffer(ref: string, filePath: string): Promise<Buffer> {
		return this.run(Operation.Show, () => {
			const relativePath = path.relative(this.repository.root, filePath).replace(/\\/g, '/');
			return this.repository.buffer(`${ref}:${relativePath}`);
		});
	}