Wikipedia — "Sankofa"

Extract

Etymology: Sankofa is a word in the Akan language of Ghana meaning "to retrieve," literally "go back and get": san — to return; ko — to go; fa — to fetch, to seek and take.
Associated proverb: "Se wo were fi na wosankofa a yenkyi" — "It is not wrong to go back for that which you have forgotten."
Adinkra symbol: represented either as a stylized heart shape or as a bird with its head turned backward while its feet face forward, carrying a precious egg in its mouth — symbolizing taking from the past what is good and bringing it into the present for positive progress.
Diaspora use: adopted as a symbol in African-American and wider African-diaspora contexts, representing the value of reflecting on the past to build the future.
The article makes no explicit claim that the word is untranslatable or lacks an English equivalent — it is defined plainly, with the fuller concept carried by the associated proverb rather than by any claimed resistance to translation.

Retrieved via WebFetch synthesis, not the raw page source; exact wording of definitions may be paraphrased.
No linguistic detail beyond the proverb and symbol — no discussion of the word's grammatical status (verb, imperative, or fixed phrase) in ordinary Akan/Twi usage.