I’ll have to assume you’re suffocated by both the following bottlenecks in getting the Android Open Source Project code:

• Blocked git:// protocol and port.
• A limit on the amount you’re allowed to download.

The Android sources amount to around 6GB in total, so anonymous proxy programs like Your-Freedom will choke after a fixed time limit; and repo sync (git) does not resume downloads between projects; though you may resume from the last project you downloaded. To smoothen out the rough edges, do this:

• Set your git proxy using this command, replacing what’s necessary: git config --global http.proxy 10.1.8.30:8080
• Follow the steps here until you reach Getting The Files: this is the part that won’t work behind a restrictive proxy.
• Switch to the directory where you initially ran repo init -u on the command line and then type in ls -a; you should be able to see a .repo folder. If you don’t, it means your repo init -u failed for some reason.
• Type in gedit .repo/manifest.xml and change line 4 to read: fetch="https://android.git.kernel.org/
• Type in gedit .repo/repo/repo and change line 5 to read: REPO_URL='http://android.git.kernel.org/tools/repo.git'
• Download the modified repo script here and replace your old repo script with the modified one.
• Continue with Getting The Files at the Android Open Source Project website and things should be working fine.