ownload failed when fetching prebuilt

```
What steps will reproduce the problem?
1.repo init -u git://gitorious.org/rowboat/manifest.git -m rowboat-froyo.xml
2.repo sync

What is the expected output? What do you see instead?
It should completely download the source code. However it fails at getting
prebuilt

What version of the product are you using? On what operating system?
product: rowboat-froyo
os: ubuntu 9.04

Please provide any additional information below.
Fetching projects: 6% (10/161) remote: Counting objects: 5, done.
remote: Compressing objects: 100% (3/3), done.
remote: Total 3 (delta 2), reused 0 (delta 0)
Unpacking objects: 100% (3/3), done.
From git://gitorious.org/rowboat/vendor-ti-am3517evm
1be5e1c..4d52c74 rowboat-froyo -> rowboat/rowboat-froyo
Fetching projects: 65% (105/161) remote: Counting objects: 11, done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 6 (delta 5), reused 0 (delta 0)
Unpacking objects: 100% (6/6), done.
From git://gitorious.org/rowboat/kernel
9163313..11dfda6 rowboat-eclair-2.6.32 -> rowboat/rowboat-eclair-2.6.32
Fetching projects: 95% (153/161) remote: Counting objects: 9348, done.
fatal: The remote end hung up unexpectedly8)
fatal: protocol error: bad pack header
error: Cannot fetch prebuilt

```

Original issue reported on code.google.com by `weise.w...@gmail.com` on 7 Jan 2011 at 3:23

Start by reproducing `repo init` with `rowboat-froyo.xml` and `repo sync` on Ubuntu 9.04, focusing on the prebuilt fetch that ends with “bad pack header.” Compare the failing fetch with the listed repository output and verify that synchronization completes and the prebuilt project downloads successfully.

Written by the indexing model from the issue text.