$ git clone -n https://src.fedoraproject.org/rpms/rust-pem-rfc7468.git /var/lib/mock/f37-build-side-32-misc-devel-381961-15939/root/chroot_tmpdir/scmroot/rust-pem-rfc7468
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-381961-15939/root/chroot_tmpdir/scmroot/rust-pem-rfc7468'...
error: RPC failed; curl 16 Error in the HTTP2 framing layer
fatal: the remote end hung up unexpectedly