$ git clone -n https://src.fedoraproject.org/rpms/R-unix.git /var/lib/mock/f37-build-side-32-misc-devel-339799-15479/root/chroot_tmpdir/scmroot/R-unix
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-339799-15479/root/chroot_tmpdir/scmroot/R-unix'...
fatal: unable to access 'https://src.fedoraproject.org/rpms/R-unix.git/': Error in the HTTP2 framing layer