diff --git a/commands/checkout.go b/commands/checkout.go
index 8ba51d2d..a4a89858 100644
--- a/commands/checkout.go
+++ b/commands/checkout.go
@@ -127,7 +127,12 @@ func transformCheckoutArgs(args *Args) error {
 		remote := baseRemote.Name
 		mergeRef := ref
 		if pullRequest.MaintainerCanModify && pullRequest.Head.Repo != nil {
-			remote = pullRequest.Head.Repo.SshUrl
+			project, err := github.NewProjectFromRepo(pullRequest.Head.Repo)
+			if err != nil {
+				return err
+			}
+
+			remote = project.GitURL("", "", true)
 			mergeRef = fmt.Sprintf("refs/heads/%s", pullRequest.Head.Ref)
 		}
 		args.Before("git", "config", fmt.Sprintf("branch.%s.remote", newBranchName), remote)
diff --git a/features/checkout.feature b/features/checkout.feature
index 9271aafd..8411b358 100644
--- a/features/checkout.feature
+++ b/features/checkout.feature
@@ -30,9 +30,8 @@ Feature: hub checkout <PULLREQ-URL>
       """
     When I run `hub checkout -f https://github.com/mojombo/jekyll/pull/77 -q`
     Then "git fetch origin refs/pull/77/head:mislav-fixes" should be run
-    And "git config branch.mislav-fixes.remote origin" should be run
-    And "git config branch.mislav-fixes.merge refs/pull/77/head" should be run
     And "git checkout -f mislav-fixes -q" should be run
+    And "mislav-fixes" should merge "refs/pull/77/head" from remote "origin"
 
   Scenario: No matching remotes for pull request base
     Given the GitHub API server:
@@ -75,9 +74,8 @@ Feature: hub checkout <PULLREQ-URL>
       """
     When I run `hub checkout https://github.com/mojombo/jekyll/pull/77 fixes-from-mislav`
     Then "git fetch origin refs/pull/77/head:fixes-from-mislav" should be run
-    And "git config branch.fixes-from-mislav.remote origin" should be run
-    And "git config branch.fixes-from-mislav.merge refs/pull/77/head" should be run
     And "git checkout fixes-from-mislav" should be run
+    And "fixes-from-mislav" should merge "refs/pull/77/head" from remote "origin"
 
   Scenario: Same-repo
     Given the GitHub API server:
@@ -143,9 +141,8 @@ Feature: hub checkout <PULLREQ-URL>
       """
     When I run `hub checkout https://github.com/mojombo/jekyll/pull/77`
     Then "git fetch origin refs/pull/77/head:pr-77" should be run
-    And "git config branch.pr-77.remote origin" should be run
-    And "git config branch.pr-77.merge refs/pull/77/head" should be run
     And "git checkout pr-77" should be run
+    And "pr-77" should merge "refs/pull/77/head" from remote "origin"
 
   Scenario: Reuse existing remote for head branch
     Given the GitHub API server:
@@ -209,7 +206,7 @@ Feature: hub checkout <PULLREQ-URL>
           :repo => {
             :owner => { :login => "mislav" },
             :name => "jekyll",
-            :ssh_url => "git@github.com:mislav/jekyll.git",
+            :html_url => "https://github.com/mislav/jekyll.git",
             :private => false
           },
         }, :base => {
@@ -223,6 +220,33 @@ Feature: hub checkout <PULLREQ-URL>
       """
     When I run `hub checkout -f https://github.com/mojombo/jekyll/pull/77 -q`
     Then "git fetch origin refs/pull/77/head:mislav-fixes" should be run
-    And "git config branch.mislav-fixes.remote git@github.com:mislav/jekyll.git" should be run
-    And "git config branch.mislav-fixes.merge refs/heads/fixes" should be run
     And "git checkout -f mislav-fixes -q" should be run
+    And "mislav-fixes" should merge "refs/heads/fixes" from remote "git@github.com:mislav/jekyll.git"
+
+  Scenario: Modifiable fork with HTTPS
+    Given the GitHub API server:
+      """
+      get('/repos/mojombo/jekyll/pulls/77') {
+        halt 406 unless request.env['HTTP_ACCEPT'] == 'application/vnd.github.v3+json;charset=utf-8'
+        json :head => {
+          :ref => "fixes",
+          :repo => {
+            :owner => { :login => "mislav" },
+            :name => "jekyll",
+            :html_url => "https://github.com/mislav/jekyll.git",
+            :private => false
+          },
+        }, :base => {
+          :repo => {
+            :name => 'jekyll',
+            :html_url => 'https://github.com/mojombo/jekyll',
+            :owner => { :login => "mojombo" },
+          }
+        }, :maintainer_can_modify => true
+      }
+      """
+    And HTTPS is preferred
+    When I run `hub checkout -f https://github.com/mojombo/jekyll/pull/77 -q`
+    Then "git fetch origin refs/pull/77/head:mislav-fixes" should be run
+    And "git checkout -f mislav-fixes -q" should be run
+    And "mislav-fixes" should merge "refs/heads/fixes" from remote "https://github.com/mislav/jekyll.git"
diff --git a/features/steps.rb b/features/steps.rb
index ba68d520..1b49d12f 100644
--- a/features/steps.rb
+++ b/features/steps.rb
@@ -208,6 +208,14 @@ Then(/^the "([^"]*)" submodule url should be "([^"]*)"$/) do |name, url|
   expect(found).to eql(url)
 end
 
+Then(/^"([^"]*)" should merge "([^"]*)" from remote "([^"]*)"$/) do |name, merge, remote|
+  actual_remote = run_silent %(git config --get-all branch.#{name}.remote)
+  expect(remote).to eql(actual_remote)
+
+  actual_merge = run_silent %(git config --get-all branch.#{name}.merge)
+  expect(merge).to eql(actual_merge)
+end
+
 Then(/^there should be no "([^"]*)" remote$/) do |remote_name|
   remotes = run_silent('git remote').split("\n")
   expect(remotes).to_not include(remote_name)
diff --git a/features/support/fakebin/git b/features/support/fakebin/git
index 8f3b6d5e..47c00248 100755
--- a/features/support/fakebin/git
+++ b/features/support/fakebin/git
@@ -4,7 +4,7 @@
 # asserted that they ran.
 
 command="$1"
-[ "$command" = "config" -a "${#@}" -le 2 ] || echo git "$@" >> "$HOME"/.history
+[ "$command" = "config" ] || echo git "$@" >> "$HOME"/.history
 
 case "$command" in
   "clone" | "fetch" | "pull" | "push" )
diff --git a/github/client.go b/github/client.go
index b45d7dd9..04e2bae6 100644
--- a/github/client.go
+++ b/github/client.go
@@ -411,7 +411,6 @@ type Repository struct {
 	Private     bool                   `json:"private"`
 	Permissions *RepositoryPermissions `json:"permissions"`
 	HtmlUrl     string                 `json:"html_url"`
-	SshUrl      string                 `json:"ssh_url"`
 }
 
 type RepositoryPermissions struct {
diff --git a/github/project.go b/github/project.go
index dfb519b9..6787679a 100644
--- a/github/project.go
+++ b/github/project.go
@@ -103,6 +103,16 @@ func preferredProtocol() string {
 	return userProtocol
 }
 
+func NewProjectFromRepo(repo *Repository) (p *Project, err error) {
+	url, err := url.Parse(repo.HtmlUrl)
+	if err != nil {
+		return
+	}
+
+	p, err = NewProjectFromURL(url)
+	return
+}
+
 func NewProjectFromURL(url *url.URL) (p *Project, err error) {
 	if !knownGitHubHostsInclude(url.Host) {
 		err = &GithubHostError{url}