below: replace vendored patch with an upstream commit

Signed-off-by: Fernando Rodrigues <alpha@sigmasquadron.net>

pkgs/by-name/be/below/package.nix

@@ -1,6 +1,7 @@
 {
   lib,
   fetchFromGitHub,
+  fetchpatch,
   rustPlatform,
   clang,
   pkg-config,
@@ -20,11 +21,16 @@ rustPlatform.buildRustPackage rec {
     hash = "sha256-tPweJFqhZMOL+M08bDjW6HPmtuhr9IXJNP0c938O7Cg=";
   };
 
-  # Upstream forgot to commit an up-to-date lockfile.
-  cargoPatches = [ ./update-Cargo.lock.patch ];
+  cargoPatches = [
+    (fetchpatch {
+      name = "update-Cargo.lock.patch";
+      url = "https://github.com/facebookincubator/below/commit/f46f9936ac29fa23f5cb02cafe93ae724649bafc.patch";
+      hash = "sha256-J+M8FIuo8ToT3+9eZi5qfwfAW98XcNRqTIJd6O8z1Ig=";
+    })
+  ];
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-uNeWdsvJtkUz3E1NL10heDC7B55yKzDMMYzRhEE32EQ=";
+  cargoHash = "sha256-JrSSIwREHSg5YJivSdBIPjOkOtdw8qGCsa4yE7rJz/E=";
 
   prePatch = ''
     sed -i "s,ExecStart=.*/bin,ExecStart=$out/bin," etc/below.service