The ability to pass customHeaders in Fetch and PushOptions was supposedly added as part of this PR #1010 however it doesn't seem as though that value ever makes it to the libgit2 code.
Activity on this issue will appear here.
The ability to pass customHeaders in Fetch and PushOptions was supposedly added as part of this PR #1010 however it doesn't seem as though that value ever makes it to the libgit2 code.