$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk-sys.git /var/lib/mock/f37-build-side-32-misc-devel-388759-15991/root/chroot_tmpdir/scmroot/rust-gtk-sys
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-388759-15991/root/chroot_tmpdir/scmroot/rust-gtk-sys'...
fatal: unable to access 'https://src.fedoraproject.org/rpms/rust-gtk-sys.git/': Error in the HTTP2 framing layer