Green’s Dictionary of Slang

ketch v.

(UK Und.) to hang.

[UK]Satirist (London) 5 June 69/3: On its being asked, why so many ill-executed pictures were yearly exhibited [...] Lennox replied, because the officers of the Academy are glad to hang all they can ketch.
[US]Matsell Vocabulum.
[Aus]C. Crowe Aus. Sl. Dict. 41: Ketch, hang.