zig fetch from local gitea server fails: TlsInitializationFailed

[apettel]

Zig Version

0.15.1

Steps to Reproduce and Observed Behavior

Environment:
macOS 15.6.1
zig 0.14.1 and 0.15.1

gitea with certificate from private CA
private root certificate is installed in macOS keychain and set to be trusted
certificate works in Safari

Command:
zig fetch --save git+https://10.0.0.10:3000/Zig/test.git

Result:
error: unable to discover remote git server capabilities: TlsInitializationFailed

Expected Behavior

the package gets fetched