title: Change the binary that Git uses to invoke GnuPG for signing commits?
body: <p>I'm signing my commits in Git using GnuPG. I'd prefer it greatly if Git would use <code>/usr/bin/gpg2</code> rather than <code>/usr/bin/gpg</code> for signing commits for some compatibility reasons. </p>
  
  <p>Is there a Git configuration setting which will allow me to set which GnuPG binary to use during signing? I haven't been able to find one.</p>