Point to sc-mainline-prod branch

Bug: 157501573
Test: repo upload
Change-Id: I9871fa6433febdfa372ea64d2ba0bc1729708301
diff --git a/tools/mainline_hook_partial.sh b/tools/mainline_hook_partial.sh
index 74c8ebd..bd82315 100755
--- a/tools/mainline_hook_partial.sh
+++ b/tools/mainline_hook_partial.sh
@@ -36,7 +36,7 @@
 ## tunables:
 ##
 DEV_BRANCH=master
-MAINLINE_BRANCH=mainline-prod
+MAINLINE_BRANCH=sc-mainline-prod
 filelist_file=MainlineFiles.cfg
 
 ###