How do I change proxy settings in IntelliJ?
Directly configure proxy settings from IntelliJ IDEA. Perform the following actions: In the IDE settings, go to Version Control | Subversion | Network. Ctrl+Alt+S is a shortcut key combination. In the Edit Subversion Options Related to Network Layers dialogue that appears, click the Edit Network Options button and provide the proxy settings.
Configure HTTP proxy in Subversion | IntelliJ IDEA Documentation.