So I ran repo sync again and surprisingly it ran without errors. I tried to move on to the next step and ran the cros_sdk command. This gave the following error:
I was inside the source tree. The only non-hidden folder inside the source tree was a chromite folder with a .git folder inside of it. Just for fun I tried a 'git pull' inside of this chromite folder and it reported that the .git folder was not a valid git repository. Then I deleted the entire chromite folder, hoping that this would cause it to download again. Now when I run 'repo sync' I get errors similar to the ones I was getting before. I attached a log of both stdout and stderr. It looks like the main problem is that .repo/projects/chromite.git is not a valid git repository.
Then I tried deleting the whole .repo/projects/chromite.git folder and running 'repo sync' again. This time it worked. I guess the git repo got corrupted during one of the downloads and it couldn't think to redownload it unless it couldn't find it.
I tried the cros_sdk command again and got this error:
Usage: cros_sdk [options] [VAR1=val1 .. VARn=valn -- args]
This script is used for manipulating local chroot environments; creating,
deleting, downloading, etc. If given --enter (or no args), it defaults
to an interactive bash shell within the chroot.
If given args those are passed to the chroot environment, and executed.
cros_sdk: error: cros_sdk is currently only supported on x86_64; you're running i686. Please find a x86_64 machine.
So now that I got everything downloaded I have to find a different machine and download it there.