can not download the dependencies from last week

rm -rf gflags-2.0-no-svn-files.tar.gz gflags-2.0
wget https://raw.githubusercontent.com/mli/deps/master/build/gflags-2.0-no-svn-files.tar.gz && tar -zxf gflags-2.0-no-svn-files.tar.gz
rm -rf protobuf-2.5.0.tar.gz protobuf-2.5.0
wget https://raw.githubusercontent.com/mli/deps/master/build/protobuf-2.5.0.tar.gz && tar -zxf protobuf-2.5.0.tar.gz
rm -rf zeromq-4.1.2.tar.gz zeromq-4.1.2
wget https://raw.githubusercontent.com/mli/deps/master/build/zeromq-4.1.2.tar.gz && tar -zxf zeromq-4.1.2.tar.gz
rm -rf lz4-r129.tar.gz lz4-r129
wget https://raw.githubusercontent.com/mli/deps/master/build/lz4-r129.tar.gz && tar -zxf lz4-r129.tar.gz
--2020-08-10 20:02:48-- https://raw.githubusercontent.com/mli/deps/master/build/gflags-2.0-no-svn-files.tar.gz
--2020-08-10 20:02:48-- https://raw.githubusercontent.com/mli/deps/master/build/protobuf-2.5.0.tar.gz
--2020-08-10 20:02:48-- https://raw.githubusercontent.com/mli/deps/master/build/zeromq-4.1.2.tar.gz
--2020-08-10 20:02:48-- https://raw.githubusercontent.com/mli/deps/master/build/lz4-r129.tar.gz
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... Resolving raw.githubusercontent.com (raw.githubusercontent.com)... Resolving raw.githubusercontent.com (raw.githubusercontent.com)... Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 0.0.0.0, ::
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|0.0.0.0|:443... failed: Connection refused.
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|::|:443... failed: Connection refused.
0.0.0.0, ::
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|0.0.0.0|:443... failed: Connection refused.
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|::|:443... failed: Connection refused.
0.0.0.0, ::
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|0.0.0.0|:443... failed: Connection refused.
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|::|:443... failed: Connection refused.
make: *** [make/deps.mk:11: /home/ecko/lab/ps-lite-1/deps/include/google/gflags.h] Error 4
make: *** Waiting for unfinished jobs....
make: *** [make/deps.mk:35: /home/ecko/lab/ps-lite-1/deps/include/google/protobuf/message.h] Error 4
make: *** [make/deps.mk:59: /home/ecko/lab/ps-lite-1/deps/include/lz4.h] Error 4
0.0.0.0, ::
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|0.0.0.0|:443... failed: Connection refused.
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|::|:443... failed: Connection refused.
make: *** [make/deps.mk:47: /home/ecko/lab/ps-lite-1/deps/include/zmq.h] Error 4

Start with make/deps.mk and reproduce the dependency download commands for gflags, protobuf, zeromq, and lz4. Confirm the expected source URLs and make targets, then verify that all archives download, extract, and produce the listed headers without connection errors.

Written by the indexing model from the issue text.