Fix formatting of message when retrying clone

Passing the force_sync variable into the string formatting results in
the message:

  "Retrying clone after deleting None"

or

  "Retrying clone after deleting True".

Pass the name of the git directory instead.

Also, move the print inside the if-block so it's only displayed
when the retry is actually going to be attempted.

Change-Id: I76d9ecc176cecee4ad512d13e9d1f6bd36aacbbb
1 file changed