On: We built the fastest CI and it failed

[Karellen]

> Sure I can (probably) build curl ten times and get ten technically different binaries

I think assuming the same build environment, then building curl is actually deterministic and reproducible:

https://tests.reproducible-builds.org/debian/rb-pkg/unstable...

(It says reproducibility fails if CFLAGS is different, but I'd count that as a change in build environment?)