hack for git packages that need to be *locked* a commit

package-build.el

@@ -119,7 +119,7 @@
                 "\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\)")
                (match-string-no-properties 1)))))))
 
-(defun package-build-checkout-git (repo dir)
+(defun package-build-checkout-git (repo dir &optional commit)
   "checkout an git repo"
   (with-current-buffer (get-buffer-create "*package-build-checkout*")
     (goto-char (point-max))
@@ -137,6 +137,11 @@
        "git" nil
        (current-buffer)
        nil "clone" repo dir)))
+    (if commit
+        (let ((default-directory dir))
+          (process-file
+           "git" nil
+           (current-buffer) nil "checkout" commit)))
     (let ((default-directory dir))
       (process-file
        "git" nil
@@ -268,7 +273,8 @@
                   (package-build-checkout-svn repo-url pkg-cwd))
                  ((eq repo-type 'git)
                   (print 'Git)
-                  (package-build-checkout-git repo-url pkg-cwd))
+                  (package-build-checkout-git repo-url pkg-cwd
+                                              (plist-get cfg :commit)))
                  ((eq repo-type 'darcs)
                   (print 'Darcs)
                   (package-build-checkout-darcs repo-url pkg-cwd))))

pkglist

@@ -54,9 +54,10 @@
   :fetcher git
   :files ("inf-ruby.el"))
  (jump
-  :url "https://github.com/vhallac/jump.el.git"
+  :url "https://github.com/eschulte/jump.el.git"
   :fetcher git
-  :files ("jump.el" "inflections.el" "findr.el"))
+  :files ("jump.el" "inflections.el" "findr.el")
+  :commit "0def5442723f8a2928eda7bcf428aa29f8aa97c1")
  (magit
   :url "git://github.com/magit/magit.git"
   :fetcher git)