Software Heritage is a non profit organisation with the mission to collect and preserve all the source code that is publicly available. To this end, we need to build adapters for all the code hosting platforms currently used, and we do not have a Redmine adapter yet.
Funding is available, thanks to a grant from the Sloan foundation, to pay expert developers willing to contribute to this effort, see https://www.softwareheritage.org/2020/05/20/welcoming-sloan-support-to-expand-the-software-heritage-archive/
If you are interested, please fill the form available here https://framaforms.org/expression-of-interest-expanding-software-heritage-1589195728
Roberto Di Cosmo