https://source.android.com/source/downloading.html
Две минуты в гугле.
To check out a branch other than "master", specify it with -b. For a list of branches, see Source Code Tags and Builds.
$ repo init -u
https://android.googlesource.com/platform/manifest -b android-4.0.1_r1
https://source.android.com/source/build-numbers.ht...
