Fix bug in GlobalCacheTracker::git_checkout_all

This fixes a bug in the `GlobalCacheTracker::git_checkout_all` function
which was using the wrong SQL column name. This function belongs to the
set of of functions only used for testing, and this particular function
was not yet used.

src/cargo/core/global_cache_tracker.rs

@@ -499,7 +499,7 @@ impl GlobalCacheTracker {
         let mut stmt = self.conn.prepare_cached(
             "SELECT git_db.name, git_checkout.name, git_checkout.size, git_checkout.timestamp
              FROM git_db, git_checkout
-             WHERE git_checkout.registry_id = git_db.id",
+             WHERE git_checkout.git_id = git_db.id",
         )?;
         let rows = stmt
             .query_map([], |row| {