Avoid double checkout

src/freedombone-utils-web

@@ -786,9 +786,11 @@ function image_install_web_server {
             mkdir "$rootdir$INSTALL_DIR"
         fi
         git clone "$NGINX_ENSITE_REPO" "$rootdir$INSTALL_DIR/nginx_ensite"
+        cd "$rootdir$INSTALL_DIR/nginx_ensite" || exit 2468748223
+        git checkout "$NGINX_ENSITE_COMMIT" -b "$NGINX_ENSITE_COMMIT"
+    else
+        cd "$rootdir$INSTALL_DIR/nginx_ensite" || exit 2468748223
     fi
-    cd "$rootdir$INSTALL_DIR/nginx_ensite" || exit 2468748223
-    git checkout "$NGINX_ENSITE_COMMIT" -b "$NGINX_ENSITE_COMMIT"
 
     chroot "$rootdir" make install
     chroot "$rootdir" nginx_dissite default