I have a problem regarding Android source code download. I have downloaded Android source code from Google and it says that the source code is 8.5 GB size. But from my estimates, I must have downloaded only around 2-3 GB size (roughly). The directory where I downloaded source code is showing size of 15 GB! and doing repo sync shows that download is complete.

Here is some more information: I downloaded using the command
$ repo init -u https://android.googlesource.com/platform/manifest

What did I do wrong ? There were times when during the download, I paused using ctrl z and resumed with fg. Also sometimes the net disconnected and I had to do repo sync again. Could that have corrupted the download? How do I check whether my download is ok? Thanks.