I often make symbolic links of folders. I recently had to change my laptop and move from Sierra to Mojave. In the old OS I used to type Cmd + R to go to the original folder. This seems to no longer work. The official apple website still has Cmd + R as the shortcut (https://support.apple.com/el-gr/HT201236).
You can change it to
Cmd+R. Go to
System Preferences > Keyboard > Shortcuts (tab) > App Shortcuts (left sidebar) click the plus and in the window:
Menu title: Show Original Just the menu item written exactly as it is in the menu,
When you change the shortcut, it'll show up in the menu item.