I'm using fish version 2.7.1 running on Fedora 29 x86_64.
Let's say for example that I create a directory like this:

mkdir -- -mydirectory

this creates a directory called -mydirectory (note that its name begins with the - character)

now I want to go to that directory.

If I try to run:

cd -mydirectory

it fails with:

cd: Unknown option '-mydirectory/'
/usr/share/fish/functions/cd.fish (line 30): 
    builtin cd $argv
    ^
in function 'cd'
	called on standard input
	with parameter list '-mydirectory/'

ok, let's try with:

cd -- -mydirectory

and it fails with the error:

Too many args for cd command

So I don't know any other method to cd to that directory