Command line patch utility won't run under Big Sur

In trying to update rsync to v3.2.3 (pls do not tell me to use HomeBrew), I want to apply two patches before compiling. However, nothing happens under Big Sur when issuing the command: patch -p1 patches/crtimes.diff. I'm in the rsync-3.2.3 folder, and patches is a folder under that. Adding --verbose does nothing, as it just hangs under Big Sur. Under 'Security & Privacy' both Terminal and /usr/bin/patch have Full Disk Access. Thoughts?

haha that's hilarious, the obvious was staring me in the face! Many thanks to @nohillside for pointing it out. It all works as intended :) patch takes input via the < which I missed many times.

patch -p1 < patches/crtimes.diff