Apply Mike's suggestions from code review

Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>

Library/Homebrew/cmd/update-reset.sh

@@ -53,7 +53,7 @@ homebrew-update-reset() {
     [[ -d "${DIR}/.git" ]] || continue
     if ! git -C "${DIR}" config --local --get remote.origin.url &>/dev/null
     then
-      opoo "No remote 'origin' in: ${DIR}"
+      opoo "No remote 'origin' in ${DIR}, skipping update and reset!"
       continue
     fi
     ohai "Fetching ${DIR}..."

Library/Homebrew/cmd/update.sh

@@ -557,9 +557,10 @@ EOS
 
     if ! git config --local --get remote.origin.url &>/dev/null
     then
-      opoo "No remote 'origin' in: ${DIR}"
+      opoo "No remote 'origin' in ${DIR}, skipping update!"
       continue
     fi
+
     if [[ -n "${HOMEBREW_VERBOSE}" ]]
     then
       echo "Checking if we need to fetch ${DIR}..."