Add fetch workaround for B6 until we push it to dkrz.

spack_repo/packages/icon-nwp/package.py

@@ -93,6 +93,9 @@ class IconNwp(Package):
                 password = token
                 url = "{}://{}:{}@{}/{}".format(parsed.scheme, user, password, parsed.netloc, parsed.path)
 
+        if self.spec.version == Version("w2w-B6"):
+            url = "ssh://git@gitlab.physik.uni-muenchen.de/w2w/icon-w2w.git"
+
         self.fetcher[0].url = self.git = url
 
         super(IconNwp, self).do_fetch(mirror_only)