diff -r 5732e6d2b369 -r 71eb6a098315 mercurial/repair.py
--- a/mercurial/repair.py	Thu Jun 01 12:08:49 2017 +0200
+++ b/mercurial/repair.py	Sat May 20 16:19:59 2017 +0200
@@ -122,6 +122,13 @@
     savebases = [cl.node(r) for r in saverevs]
     stripbases = [cl.node(r) for r in tostrip]
 
+    stripobsidx = obsmarkers = ()
+    if repo.ui.configbool('devel', 'strip-obsmarkers', True):
+        obsmarkers = obsolete.exclusivemarkers(repo, stripbases)
+    if obsmarkers:
+        stripobsidx = [i for i, m in enumerate(repo.obsstore)
+                       if m in obsmarkers]
+
     # For a set s, max(parents(s) - s) is the same as max(heads(::s - s)), but
     # is much faster
     newbmtarget = repo.revs('max(parents(%ld) - (%ld))', tostrip, tostrip)
@@ -185,6 +192,9 @@
                 if troffset == 0:
                     repo.store.markremoved(file)
 
+            deleteobsmarkers(repo.obsstore, stripobsidx)
+            del repo.obsstore
+
         if tmpbundlefile:
             ui.note(_("adding branch\n"))
             f = vfs.open(tmpbundlefile, "rb")