Efficiently disable fs-verity on large files

If the FS_IOC_ENABLE_VERITY ioctl was used to enable fs-verity on a file (e.g., with the fsverity enable command), and then I want to write to that file again, how can I disable fs-verity on it? Right now, my workaround is to copy the file and then delete the original, but this is really inefficient when the file is large.