This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
紦 combines 糸 (thread) with 巴, which likely contributes the sound. The exact historical development is uncertain.
The left side 糸 suggests thread or fabric, and the right side 巴 is a common phonetic component. Without a clear meaning, picture a spool of thread with a distinctive 巴-shaped mark.
For ハ, imagine a spool of thread marked with a laughing 'ha!' sound: ha -> ハ, as if the thread is amused by its own 巴 shape.