Using tup inside a fuse filesystem

I'd like to be able to use tup in a directory stored inside a FUSE-mounted filesystem. When I try it, `tup` complains:
```
mount_macfuse: mount point .../tup-test/.tup/mnt is itself on a macFUSE volume
```

Is it possible to change the location of `.tup/mnt` and put it on the regular filesystem (for example, in `/tmp` or some place similar)?