A way to force using wget

The copy of curl included with my router firmware does not support https. The copy of wget in it does, but even if I use wget to execute get.acme.sh, the script still searches for curl and uses it by default.

I know I have a unique use-case trying to get an SSL cert for a router, but it would be nice if this was supported. This is (as far as I know) the only shell script style ACME client that doesn't require bash or some other more advanced shell. The router runs busybox, which of course only implements ash.