https://github.com/devrandom/gitian-builder/blob/updater/share/gitian-updater
https://github.com/devrandom/gitian-builder/blob/updater/doc/DOWNLOADER.md
sample zip file:
https://gitian.org/bitcoin-0.3.21.zip
gitian-updater --config bitcoin-download-config.yml --dest /tmp/bitcoin
gitian-updater --config bitcoin-download-config.yml -m bitcoin-updater
then run the result:
./bitcoin-updater --dest /tmp/bitcoin
Downloading: bitcoin-0.3.21.zip Bytes: 11624355
11665408 [100.35%]
Some of the files were not checksummed:
src/obj/nogui/.gitignore
src/obj/.gitignore
src/cryptopp/obj/.gitignore
src/.gitignore
Signatures from:
Sipa : weight 20
Devrandom : weight 20
BlueMatt : weight 40
...
Successful with signature weight 80