diff --git a/pkgs/development/libraries/libs3/default.nix b/pkgs/development/libraries/libs3/default.nix
index 551f65c2971..3d8699918e1 100644
--- a/pkgs/development/libraries/libs3/default.nix
+++ b/pkgs/development/libraries/libs3/default.nix
@@ -1,12 +1,13 @@
-{ stdenv, fetchgit, curl, libxml2 }:
+{ stdenv, fetchFromGitHub, curl, libxml2 }:
 
 stdenv.mkDerivation {
   name = "libs3-2015-01-09";
 
-  src = fetchgit {
-    url = "git://github.com/bji/libs3.git";
+  src = fetchFromGitHub {
+    owner = "bji";
+    repo = "libs3";
     rev = "4d21fdc0857b88c964649b321057d7105d1e4da3";
-    sha256 = "058sixppk078mdn9ii3swg87nbpgl86llz9mdhj5km5m53a7dnjw";
+    sha256 = "1c33h8lzlpmsbkymd2dac9g8hqhd6j6yzdjrhha8bcqyys6vcpy3";
   };
 
   buildInputs = [ curl libxml2 ];
diff --git a/pkgs/development/libraries/nss_wrapper/default.nix b/pkgs/development/libraries/nss_wrapper/default.nix
index b0595e61e65..278834190bb 100644
--- a/pkgs/development/libraries/nss_wrapper/default.nix
+++ b/pkgs/development/libraries/nss_wrapper/default.nix
@@ -1,12 +1,11 @@
-{ stdenv, fetchgit, cmake, pkgconfig }:
+{ stdenv, fetchurl, cmake, pkgconfig }:
 
 stdenv.mkDerivation rec {
   name = "nss_wrapper-1.0.3";
 
-  src = fetchgit {
-    url = "git://git.samba.org/nss_wrapper.git";
-    rev = "refs/tags/${name}";
-    sha256 = "1jka6d873vhvfr7k378xvgxmbpka87w33iq6b91ynwg36pz53ifw";
+  src = fetchurl {
+    url = "mirror://samba/cwrap/${name}.tar.gz";
+    sha256 = "0bysdijvi9n0jk74iklbfhbp0kvv81a727lcfd5q03q2hkzjfm18";
   };
 
   buildInputs = [ cmake pkgconfig ];
diff --git a/pkgs/development/libraries/socket_wrapper/default.nix b/pkgs/development/libraries/socket_wrapper/default.nix
index 1344ad18d09..d682b10141e 100644
--- a/pkgs/development/libraries/socket_wrapper/default.nix
+++ b/pkgs/development/libraries/socket_wrapper/default.nix
@@ -1,12 +1,11 @@
-{ stdenv, fetchgit, cmake, pkgconfig }:
+{ stdenv, fetchurl, cmake, pkgconfig }:
 
 stdenv.mkDerivation rec {
   name = "socket_wrapper-1.1.3";
 
-  src = fetchgit {
-    url = "git://git.samba.org/socket_wrapper.git";
-    rev = "refs/tags/${name}";
-    sha256 = "0b3sfjy7418gg52qkdblfi5x57g4m44n7434xhacz9isyl5m52vn";
+  src = fetchurl {
+    url = "mirror://samba/cwrap/${name}.tar.gz";
+    sha256 = "04xfa4yhcaj63ymagmlx77fakrx3wb8ss42m15pmwjaiyi2xndx3";
   };
 
   buildInputs = [ cmake pkgconfig ];
diff --git a/pkgs/tools/filesystems/ceph/0.94.nix b/pkgs/tools/filesystems/ceph/0.94.nix
index 0fc2b60748a..a14259184a5 100644
--- a/pkgs/tools/filesystems/ceph/0.94.nix
+++ b/pkgs/tools/filesystems/ceph/0.94.nix
@@ -4,7 +4,7 @@ callPackage ./generic.nix (args // rec {
   version = "0.94.1";
 
   src = fetchgit {
-    url = "git://github.com/ceph/ceph.git";
+    url = "https://github.com/ceph/ceph.git";
     rev = "refs/tags/v${version}";
     sha256 = "0rrl10vda4xv22al2c5ccd8v8drs26186dvkrxndvqz8p9999cjx";
   };
diff --git a/pkgs/tools/misc/grub/2.0x.nix b/pkgs/tools/misc/grub/2.0x.nix
index 47eb90eb11e..501c6820df2 100644
--- a/pkgs/tools/misc/grub/2.0x.nix
+++ b/pkgs/tools/misc/grub/2.0x.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchgit, autogen, flex, bison, python, autoconf, automake
+{ stdenv, fetchurl, fetchFromSavannah, autogen, flex, bison, python, autoconf, automake
 , gettext, ncurses, libusb, freetype, qemu, devicemapper
 , zfs ? null
 , efiSupport ? false
@@ -41,10 +41,10 @@ assert zfsSupport -> zfs != null;
 stdenv.mkDerivation rec {
   name = "grub-${version}";
 
-  src = fetchgit {
-    url = "git://git.savannah.gnu.org/grub.git";
+  src = fetchFromSavannah {
+    repo = "grub";
     rev = "70b002de55abbfd6b2d2f2ea4408078d93c9e0de";
-    sha256 = "1170413b4d9kwqwgi1dcsnbwn8mb3snbid858wyfv84910kbrs2d";
+    sha256 = "1bhm1yxjmckzn45v70lzmz0qpj5prhb4iyiyqqw8rvyykcixw5qk";
   };
 
   nativeBuildInputs = [ autogen flex bison python autoconf automake ];