% pwd
/home/kaustuv/.opam/packages/ocp-build/ocp-build.1.99.13-beta
% ls
descr  opam  url
% cat url
archive: "http://github.com/OCamlPro/ocp-build/archive/1.99.13-beta.tar.gz"
checksum: "52ca4a83d6722f3d75e74019f10aad90"
% wget http://github.com/OCamlPro/ocp-build/archive/1.99.13-beta.tar.gz
URL transformed to HTTPS due to an HSTS policy
--2016-06-08 13:12:38--  https://github.com/OCamlPro/ocp-build/archive/1.99.13-beta.tar.gz
Resolving github.com (github.com)... 192.30.252.130
Connecting to github.com (github.com)|192.30.252.130|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://github.com/OCamlPro/typerex-build/archive/1.99.13-beta.tar.gz [following]
--2016-06-08 13:12:39--  https://github.com/OCamlPro/typerex-build/archive/1.99.13-beta.tar.gz
Reusing existing connection to github.com:443.
HTTP request sent, awaiting response... 302 Found
Location: https://codeload.github.com/OCamlPro/typerex-build/tar.gz/1.99.13-beta [following]
--2016-06-08 13:12:39--  https://codeload.github.com/OCamlPro/typerex-build/tar.gz/1.99.13-beta
Resolving codeload.github.com (codeload.github.com)... 192.30.253.121
Connecting to codeload.github.com (codeload.github.com)|192.30.253.121|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 357998 (350K) [application/x-gzip]
Saving to: ‘1.99.13-beta.tar.gz’

1.99.13-beta.tar.gz                                       100%[=====================================================================================================================================>] 349.61K   215KB/s    in 1.6s

2016-06-08 13:12:41 (215 KB/s) - ‘1.99.13-beta.tar.gz’ saved [357998/357998]

% md5sum 1.99.13-beta.tar.gz
46e876a35fd905df5be9b062e773b7f6  1.99.13-beta.tar.gz