repopick: fetch from BlissRoms remote, not GitHub

Our default name for GitHub remotes is BlissRoms, not github

Change-Id: I3c8591eeb32c65b019031d563e5574f63b6f4eba
diff --git a/build/tools/repopick.py b/build/tools/repopick.py
index 96149bd..787a7e0 100755
--- a/build/tools/repopick.py
+++ b/build/tools/repopick.py
@@ -413,9 +413,9 @@
                 print('Trying to fetch the change from GitHub')
 
             if args.pull:
-                cmd = ['git pull --no-edit github', item['fetch'][method]['ref']]
+                cmd = ['git pull --no-edit BlissRoms', item['fetch'][method]['ref']]
             else:
-                cmd = ['git fetch github', item['fetch'][method]['ref']]
+                cmd = ['git fetch BlissRoms', item['fetch'][method]['ref']]
             if args.quiet:
                 cmd.append('--quiet')
             else: