$ git clone -n https://src.fedoraproject.org/rpms/proxygen.git /var/lib/mock/f39-build-2464086-61444/root/chroot_tmpdir/scmroot/proxygen
Cloning into '/var/lib/mock/f39-build-2464086-61444/root/chroot_tmpdir/scmroot/proxygen'...
error: RPC failed; HTTP 500 curl 22 The requested URL returned error: 500
fatal: the remote end hung up unexpectedly