Replace %2F with / in url for branch

[matthiasbeyer]

Motivation

I found that the URL encoding that is put into the Cargo.lock file by cargo does not work in a nix build using crane, because crane does not decode the url in the generated source replacement config.toml.

FWIW, I know that this patch cannot be the actual solution to the problem, but it is a proof of concept that this is the issue.

We (@TheNeikos and I) used this repository:

https://github.com/cloudroots/erased-serde

with this branch: feature/make_make_serializer_public in the repo where we encountered the issue (unfortunately, that repo is still proprietary and closed source).

In the branch setting in the generated source replacement config.toml is branch = "feature%2Fmake_make_serializer_public" - which does not work with cargo and results in cargo failing during buildtime (unfortunately with Temporary failure in name resolution for github.com, which is not really helping here).

Checklist

• added tests to verify new behavior
• added an example template or updated an existing one
• updated docs/API.md (or general documentation) with changes
• updated CHANGELOG.md

[ipetkov]

Hi @matthiasbeyer thanks for the PR! I've landed an alternative (and slightly more general) implementation of this in #764. Please try that out and feel free to open a follow up issue if that does not work!

In the mean time will close this out