I cannot access https://hg.savannah.gnu.org/hgweb/ with either "hg" or "wget" or "lynx", but can with chrome browser. E.g.:
$ wget --verbose https://hg.savannah.gnu.org/hgweb --2023-04-12 10:42:46-- https://hg.savannah.gnu.org/hgweb Resolving hg.savannah.gnu.org (hg.savannah.gnu.org)... 2001:470:142:5::201, 209.51.188.201 Connecting to hg.savannah.gnu.org (hg.savannah.gnu.org )|2001:470:142:5::201|:443... Do you filter by UserAgent? Dmitri. --