Set GIT_SSL_CAPATH to override default

Library/Homebrew/brew.sh

@@ -573,6 +573,7 @@ setup_ca_certificates() {
   then
     export SSL_CERT_FILE="${HOMEBREW_PREFIX}/etc/ca-certificates/cert.pem"
     export GIT_SSL_CAINFO="${HOMEBREW_PREFIX}/etc/ca-certificates/cert.pem"
+    export GIT_SSL_CAPATH="${HOMEBREW_PREFIX}/etc/ca-certificates"
   fi
 }
 setup_ca_certificates

Library/Homebrew/formula_installer.rb

@@ -800,6 +800,7 @@ class FormulaInstaller
     if formula.name == "ca-certificates" &&
        !DevelopmentTools.ca_file_handles_most_https_certificates?
       ENV["SSL_CERT_FILE"] = ENV["GIT_SSL_CAINFO"] = formula.pkgetc/"cert.pem"
+      ENV["GIT_SSL_CAPATH"] = formula.pkgetc
     end
 
     # use installed curl when it's needed and available