I had this problem... so i tried to install hashcat via homebrew, but i got this error back:
command used:
brew install hashcat
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
Error: No available formula or cask with the name "hashcat".
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.```
Faced a similar issue in homebrew as below,
Searching taps on GitHub... Error: No formulae found in taps
had run this command to update the branch as master, which fixed the issue:
git -C $(brew --repo homebrew/core) checkout master
For troubleshooting brew the following command helps: brew doctor