update and refresh fixes

install.sh

@@ -40,10 +40,13 @@ else
   echo "git is installed."
 fi
 
-# Clone the latest CoreDesktop repo into the standard data directory
+# Update or clone the CoreDesktop repo
 echo "Getting the latest version of CoreDesktop..."
-rm -rf ~/.local/share/coredesktop
-git clone https://gitea.federated.computer/david/coredesktop.git ~/.local/share/coredesktop > /dev/null
+if [ -d "$HOME/.local/share/coredesktop/.git" ]; then
+  git -C ~/.local/share/coredesktop pull
+else
+  git clone https://gitea.federated.computer/david/coredesktop.git ~/.local/share/coredesktop
+fi
 
 # Install the corerefresh and coreupdate management scripts to the user's bin
 mkdir -p ~/.local/bin