To copy-cat @axplessis solution to your case @sanjoyg, you would need to clone tappas on your system, and edit this file:
tappas/core/hailo/libs/postprocesses/recognition/repvgg.cpp at 0f4813c7683f388886b9900ceaeeb0c4ec49a3f0 · hailo-ai/tappas (github.com)
change the define:
#define OUTPUT_LAYER_NAME "repvgg_a0_person_reid_2048/fc1
to this
#define OUTPUT_LAYER_NAME "repvgg_a0_person_reid_512/fc1"
And compile the package