--- a/hgext/robustcheckout/__init__.py
+++ b/hgext/robustcheckout/__init__.py
@@ -245,30 +245,31 @@ def _docheckout(ui, url, dest, upstream,
         jittermin = ui.configint('robustcheckout', 'retryjittermin', 1000)
         jittermax = ui.configint('robustcheckout', 'retryjittermax', 5000)
         backoff += float(random.randint(jittermin, jittermax)) / 1000.0
         ui.warn('(waiting %.2fs before retry)\n' % backoff)
         time.sleep(backoff)
 
         networkattempts[0] += 1
 
-    def handlepullabort(e):
-        """Handle an error.Abort raised during a pull.
+    def handlepullerror(e):
+        """Handle an exception raised during a pull.
 
         Returns True if caller should call ``callself()`` to retry.
         """
-        if e.args[0] == _('repository is unrelated'):
-            ui.warn('(repository is unrelated; deleting)\n')
-            destvfs.rmtree(forcibly=True)
-            return True
-        elif e.args[0].startswith(_('stream ended unexpectedly')):
-            ui.warn('%s\n' % e.args[0])
-            # Will raise if failure limit reached.
-            handlenetworkfailure()
-            return True
+        if isinstance(e, error.Abort):
+            if e.args[0] == _('repository is unrelated'):
+                ui.warn('(repository is unrelated; deleting)\n')
+                destvfs.rmtree(forcibly=True)
+                return True
+            elif e.args[0].startswith(_('stream ended unexpectedly')):
+                ui.warn('%s\n' % e.args[0])
+                # Will raise if failure limit reached.
+                handlenetworkfailure()
+                return True
 
         return False
 
     created = False
 
     if not destvfs.exists():
         # Ensure parent directories of destination exist.
         # Mercurial 3.8 removed ensuredirs and made makedirs race safe.
@@ -283,17 +284,17 @@ def _docheckout(ui, url, dest, upstream,
         if upstream:
             ui.write('(cloning from upstream repo %s)\n' % upstream)
         cloneurl = upstream or url
 
         try:
             res = hg.clone(ui, {}, cloneurl, dest=dest, update=False,
                            shareopts={'pool': sharebase, 'mode': 'identity'})
         except error.Abort as e:
-            if handlepullabort(e):
+            if handlepullerror(e):
                 return callself()
             raise
         except error.RepoError as e:
             return handlerepoerror(e)
         except error.RevlogError as e:
             ui.warn('(repo corruption: %s; deleting shared store)\n' % e.message)
             deletesharedstore()
             return callself()
@@ -342,17 +343,17 @@ def _docheckout(ui, url, dest, upstream,
 
             if checkoutrevision in repo:
                 ui.warn('(revision already present locally; not pulling)\n')
             else:
                 pullop = exchange.pull(repo, remote, heads=pullrevs)
                 if not pullop.rheads:
                     raise error.Abort('unable to pull requested revision')
         except error.Abort as e:
-            if handlepullabort(e):
+            if handlepullerror(e):
                 return callself()
             raise
         except error.RepoError as e:
             return handlerepoerror(e)
         except error.RevlogError as e:
             ui.warn('(repo corruption: %s; deleting shared store)\n' % e.message)
             deletesharedstore()
             return callself()