$ git clone -n https://src.fedoraproject.org/rpms/rubygem-json_spec.git /var/lib/mock/f37-build-side-32-misc-devel-403699-16073/root/chroot_tmpdir/scmroot/rubygem-json_spec
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-403699-16073/root/chroot_tmpdir/scmroot/rubygem-json_spec'...
error: RPC failed; curl 16 Error in the HTTP2 framing layer
fatal: the remote end hung up unexpectedly