title: Unable to install wget
body: <p>My MacBook Air was equipped with macOS Mojave Version 10.14.6.
  I cannot install wget even if I have checked brew version.</p>
  <pre><code>brew --version
  </code></pre>
  <p>The output is :</p>
  <pre><code>Homebrew 3.3.13
  Homebrew/homebrew-core (no Git repository)
  Homebrew/homebrew-cask (git revision fb6ec06d8b; last commit 2022-01-31)
  </code></pre>
  <p>When I tried to install wget:</p>
  <pre><code>brew install wget
  </code></pre>
  <p>This is the result:</p>
  <pre><code>Warning: No available formula with the name &quot;ca-certificates&quot;.
  ==&gt; Searching for similarly named formulae...
  Error: No similarly named formulae found.
  ==&gt; Searching for a previously deleted formula (in the last month)...
  Error: No previously deleted formula found.
  ==&gt; Searching taps on GitHub...
  Running `brew update --preinstall`...
  Error: No formulae found in taps.
  fatal: Could not resolve HEAD to a revision
  Warning: No available formula with the name &quot;wget&quot;.
  ==&gt; Searching for similarly named formulae...
  Error: No similarly named formulae found.
  ==&gt; Searching for a previously deleted formula (in the last month)...
  Error: No previously deleted formula found.
  ==&gt; Searching taps on GitHub...
  Error: No formulae found in taps.
  </code></pre>
  <p>This problem has bothered me for a long while...</p>