$ git clone -n https://src.fedoraproject.org/rpms/rust-async-io.git /var/lib/mock/f39-build-1526077-36059/root/chroot_tmpdir/scmroot/rust-async-io
Cloning into '/var/lib/mock/f39-build-1526077-36059/root/chroot_tmpdir/scmroot/rust-async-io'...
error: RPC failed; curl 16 Error in the HTTP2 framing layer
fatal: the remote end hung up unexpectedly