Fix github-based repository fetching for URLs missing .git extension

1 files changed, 4 insertions, 2 deletions

diff --git a/bpkg/fetch.hxx b/bpkg/fetch.hxx
index a8acbb7..2adbfe3 100644
--- a/bpkg/fetch.hxx
+++ b/bpkg/fetch.hxx
@@ -107,12 +107,14 @@ namespace bpkg
 
   // Start the process of fetching the specified URL. If out is empty, then
   // fetch to stdout. In this case also don't show any progress unless we are
-  // running verbose.
+  // running verbose. If user_agent is empty, then send the default (fetch
+  // program specific) User-Agent header value.
   //
   butl::process
   start_fetch (const common_options& o,
                const string& url,
-               const path& out = path ());
+               const path& out = {},
+               const string& user_agent = {});
 }
 
 #endif // BPKG_FETCH_HXX