ubuntu:~$ cd unrealircd-5.0.9.1

ubuntu:~/unrealircd-5.0.9.1$ wget https://github.com/unrealircd/unrealircd/commit/36097fbdcedeb906c008f7ce49a891781d74ca19.patch

--2021-06-07 13:10:32--  https://github.com/unrealircd/unrealircd/commit/36097fbdcedeb906c008f7ce49a891781d74ca19.patch
Resolving github.com (github.com)... 140.82.113.4
Connecting to github.com (github.com)|140.82.113.4|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3437 (3.4K) [text/plain]
Saving to: ‘36097fbdcedeb906c008f7ce49a891781d74ca19.patch’

36097fbdcedeb906c008f7ce49a891781d74ca1 100%[=============================================================================>]   3.36K  --.-KB/s    in 0s

2021-06-07 13:10:32 (53.3 MB/s) - ‘36097fbdcedeb906c008f7ce49a891781d74ca19.patch’ saved [3437/3437]

ubuntu:~/unrealircd-5.0.9.1$ patch -p1 < 36097fbdcedeb906c008f7ce49a891781d74ca19.patch

patching file include/h.h
patching file src/misc.c
Hunk #1 succeeded at 583 (offset -1 lines).
Hunk #2 succeeded at 699 (offset -1 lines).
Hunk #3 succeeded at 822 (offset -1 lines).
patching file src/modules/squit.c

ubuntu@~/unrealircd-5.0.9.1$