mirrorオプションを忘れそうになるんだよな
--mirror Use the specified URL as a mirror URL. If URL is a comma-separated list of URLs, multiple mirrors will be added.
実行コマンド。
brew bump-formula-pr --url=https://curl.se/download/curl-7.82.0.tar.bz2 --mirror=https://github.com/curl/curl/releases/download/curl-7_82_0/curl-7.82.0.tar.bz2,http://fresh-center.net/linux/www/curl-7.82.0.tar.bz2,http://fresh-center.net/linux/www/legacy/curl-7.82.0.tar.bz2 --sha256=46d9a0400a33408fd992770b04a44a7434b3036f2e8089ac28b57573d59d371f curl --force