I did this

--dump-header
and download multiply files with that options.

I expected the following

cURL reset my --dump-header "file contain" if there is no header receive by cURL.
for example:
My first header download www.example1.com/object.exe write by cURL on my --dump-header file, downloading the second object www.example2.com/object.exe without header information, cURL delete my previous header.
This happen when using cURL v7.67.0 but not with v7.65.3.

curl/libcurl version

7.65.3 and 7.67.0

operating system

Windows