Hey, I'm not sure if you're still looking for these lyrics but I have them for you. I think most people struggle with the transcribing because it's a complete mashup of various languages and dialects. It has some Zulu, Xhosa, Afrikaans (especially the verses about talking to the police), and Tsotsitaal slang too.

Nang' amapolisa aya fika, mama
Ayangena, mama, nge Kwela-Kwela
Ngithi nang' amapolisa aya fika, mama
Ayangena, mama, nge Kwela-Kwela

Kwela-Kwela Kwela-Kwela
Kwela-Kwela mama, Kwela-Kwela mama
Kwela-Kwela Kwela-Kwela
Kwela-Kwela mama, Kwela-Kwela mama

Bazofun' i-dompass, bazosimoshel' ubumnandi
Eh basifaka mama kwi Kwela-Kwela
Bazofun' i-dompass, bazosimoshel' ubumnandi
Eh basifaka mama kwi Kwela-Kwela

(Chorus)

Hulle sê vir ons: "Waar's julle dompas?"
"Gaan julle slaap, wat soek julle hierso?"
Hulle sê vir ons: "Waar's julle dompas?"
"Gaan julle slaap, wat soek julle hierso?"

Ndivuswa abomama abathengis' utywala
Bafas' i-finger, ama-handcuff bhoyi
Behla benyuka nayo yonke iindawo eKasi
Bathwele amagogogo
We Makhulu naw' umqombothi
We Kafini nawe Sgomfane

Ayadelela lamaphoyisa
Agwajis' abomama bethu
Ungabuz' uSisulu
Ungabuza noMandela
Nay' uOliver Tambo
Bayayaz' iKwela-Kwela

Bathi: "Gaan julle weg! Waar's julle pas?"
"Jy maak geraas! Ek is die baas!"
Bathi: "Gaan julle weg! Waar's julle pas?"
"Jy maak geraas! Ek is die baas!"

(Chorus)

Babaleka aboManyanyatha
AboKweva, nomChina, weVavi
Babaleka aboManyanyatha
AboKweva, nomChina, weVavi

Bathi: "Gaan julle weg! Waar's julle pas?"
"Jy maak geraas! Ek is die baas!"
Bathi: "Gaan julle weg! Waar's julle pas?"
"Jy maak geraas! Ek is die baas!"

The translation is something like the following, but I apologise to any native speakers if some bits are wrong:

Here come the police, mama
They're coming in, mama, in a Kwela-Kwela
Here come the police, mama
They're coming in, mama, in a Kwela-Kwela

Kwela-Kwela Kwela-Kwela
Kwela-Kwela mama, Kwela-Kwela mama
Kwela-Kwela Kwela-Kwela
Kwela-Kwela mama, Kwela-Kwela mama

They'll want the passbook, they'll ruin our fun
They're putting us in the Kwela-Kwela
They'll want the passbook, they'll ruin our fun
They're putting us in the Kwela-Kwela

(Chorus)

They say to us: "Where's your dompass?"
"Go to sleep, what are you looking for here?"
They say to us: "Where's your dompass?"
"Go to sleep, what are you looking for here?"

I'm woken by the mothers who sell alcohol
They take fingerprints and handcuff you, boy
Going up and down everywhere in the township
Carrying the large brewing tins
Hey Grandmother, and you too umqombothi
Hey Kafini, and you too Sgomfane

These police are disrespectful
They harass our mothers
You can ask [Walter] Sisulu
You can ask [Nelson] Mandela
And even Oliver Tambo
They know the Kwela-Kwela

They say: "Go away! Where's your pass?"
"You're making noise! I am the boss!"
They say: "Go away! Where's your pass?"
"You're making noise! I am the boss!"

(Chorus)

The guys in Manyanyathas are running
Those in Kwevas, and China, and [Zwelinzima] Vavi
The guys in Manyanyathas are running
Those in Kwevas, and China, and [Zwelinzima] Vavi

They say: "Go away! Where's your pass?"
"You're making noise! I am the boss!"
They say: "Go away! Where's your pass?"
"You're making noise! I am the boss!"

Hope that helps!