--- a/mercurial/commands.py	Fri Apr 12 12:06:13 2019 -0400
+++ b/mercurial/commands.py	Fri Apr 12 12:20:38 2019 -0400
@@ -3496,7 +3496,7 @@
                 else:
                     patchurl = os.path.join(base, patchurl)
                     ui.status(_('applying %s\n') % patchurl)
-                    patchfile = hg.openpath(ui, patchurl)
+                    patchfile = hg.openpath(ui, patchurl, sendaccept=False)
 
                 haspatch = False
                 for hunk in patch.split(patchfile):

--- a/mercurial/hg.py	Fri Apr 12 12:06:13 2019 -0400
+++ b/mercurial/hg.py	Fri Apr 12 12:20:38 2019 -0400
@@ -153,13 +153,13 @@
             return False
     return repo.local()
 
-def openpath(ui, path):
+def openpath(ui, path, sendaccept=True):
     '''open path with open if local, url.open if remote'''
     pathurl = util.url(path, parsequery=False, parsefragment=False)
     if pathurl.islocal():
         return util.posixfile(pathurl.localpath(), 'rb')
     else:
-        return url.open(ui, path)
+        return url.open(ui, path, sendaccept=sendaccept)
 
 # a list of (ui, repo) functions called for wire peer initialization
 wirepeersetupfuncs = []

--- a/mercurial/url.py	Fri Apr 12 12:06:13 2019 -0400
+++ b/mercurial/url.py	Fri Apr 12 12:20:38 2019 -0400
@@ -601,7 +601,7 @@
 
     return opener
 
-def open(ui, url_, data=None):
+def open(ui, url_, data=None, sendaccept=True):
     u = util.url(url_)
     if u.scheme:
         u.scheme = u.scheme.lower()
@@ -610,7 +610,9 @@
         path = util.normpath(os.path.abspath(url_))
         url_ = 'file://' + pycompat.bytesurl(urlreq.pathname2url(path))
         authinfo = None
-    return opener(ui, authinfo).open(pycompat.strurl(url_), data)
+    return opener(ui, authinfo,
+                  sendaccept=sendaccept).open(pycompat.strurl(url_),
+                                              data)
 
 def wrapresponse(resp):
     """Wrap a response object with common error handlers.