The Hebrew and Greek that is transliterated in English as “hyssop” is translated in Lokạạ as yisoki. Yisoki “is the name of a local bitter herb that is used for ritual cleansing in the traditional religion. It was, therefore, perceived by the translators as functionally adequate for ‘hyssop.’ The translation is thus symbolic in that it uses an indigenous Lokạạ botanical term and simultaneously indexical in that the translators believed that the translation points to the functional significance of the incipient term.” (Source: J.A. Naudé, C.L. Miller Naudé, J.O. Obono in Acta Theologica 43/2, 2023, p. 129ff. )
Likewise in Kwere mfumbasi is used, a local plant that both looked similar to hyssop and is traditionally used for sprinkling in rituals. (Source: Pioneer Bible Translators, project-specific translation notes in Paratext)
For more information see Hyssopus officinalis .