$ git clone -n https://src.fedoraproject.org/rpms/mlton.git /var/lib/mock/f37-build-side-32-misc-devel-412846-16141/root/chroot_tmpdir/scmroot/mlton
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-412846-16141/root/chroot_tmpdir/scmroot/mlton'...
error: RPC failed; curl 16 Error in the HTTP2 framing layer
fatal: the remote end hung up unexpectedly