mani@Mani:~$ cd rootbox
mani@Mani:~/rootbox$ repo init -u git://github.com/Root-Box/platform_manifest.git -b jb
gpg: key 920F5C65: "Repo Maintainer <repo@android.kernel.org>" not changed
gpg: key 338871A4: public key "Conley Owens <cco3@android.com>" imported
gpg: Total number processed: 2
gpg:               imported: 1  (RSA: 1)
gpg:              unchanged: 1

Get https://gerrit.googlesource.com/git-repo/clone.bundle
Get git://github.com/Root-Box/platform_manifest.git
remote: Counting objects: 1352, done.
remote: Compressing objects: 100% (764/764), done.
remote: Total 1352 (delta 651), reused 1288 (delta 587)
Receiving objects: 100% (1352/1352), 185.31 KiB | 36 KiB/s, done.
Resolving deltas: 100% (651/651), done.
From git://github.com/Root-Box/platform_manifest
 * [new branch]      jb-4.1.2   -> origin/jb-4.1.2
 * [new branch]      jb-mr1     -> origin/jb-mr1
error: revision jb in manifests not found
mani@Mani:~/rootbox$