scp(1) on macOS
The text 6cc5d1449da4, as Mac OS X 10.2.8.G5, Mac OS X 10.2.8, Mac OS X 10.2.7, Mac OS X 10.2.6, Mac OS X 10.2.5, Mac OS X 10.2.4, Mac OS X 10.2.3, Mac OS X 10.2.2, Mac OS X 10.2.1, Mac OS X 10.2 shipped it.
secure copy (remote file copy program)
Flags it lists
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-4 -
-6 -
-B -
-C -
-F -
-P -
-S -
-c -
-i -
-o -
-p -
-q -
-r -
-v