The resistor will indeed reflect the incoming signals back, but those signals exist in a few mm of IC pin + resistor pin, which have an infinitesimally small inductance. Thus those reflections will not be enough to produce any measurable overshoot.
On the other side of the resistor, a source with ~1kOhm resistance feeding a 50 Ohm cable will create a ...
I believe this company makes what you are looking for. However they have minimum order of 4,500 pieces:
It could also be done with an FPGA but would require investment in HDMI IP and cost would be quite high.