hgext/eol.py

--- a/hgext/eol.py	Fri Apr 13 09:48:22 2018 -0700
+++ b/hgext/eol.py	Fri Apr 13 22:46:37 2018 -0700
@@ -300,7 +300,7 @@
 hook = checkheadshook
 
 def preupdate(ui, repo, hooktype, parent1, parent2):
-    p1node = scmutil.resolvepartialhexnodeid(repo, parent1)
+    p1node = scmutil.resolvehexnodeidprefix(repo, parent1)
     repo.loadeol([p1node])
     return False