diff --git a/src/centpkg/utils.py b/src/centpkg/utils.py
index e611fd1..0d9c524 100644
--- a/src/centpkg/utils.py
+++ b/src/centpkg/utils.py
@@ -291,7 +291,7 @@ def does_divergent_branch_exist(repo_name, rhel_version, active_y, rhel_dist_git
 
     # Determine if the Y-1 branch exists for this repo
 
-    divergent_branch = active_y - 1
+    divergent_branch = "{}.{}.0".format(rhel_version, active_y - 1)
     logger.debug("Divergent branch: {}".format(divergent_branch))
     
     g = gitpython.cmd.Git()