Here's a chant from the university based, African American, Greek letter fraternity Omega Psi Phi, Inc:

WE ARE THE BROTHERS OF Q PSI PHI

Refrain leader: Oh Oh Oh!
All: Oh Oh Oh!
Leader: Oh Oh Oh Oh!
All: Oh Oh Oh!

Leader: We are the brothers of Que Psi Phi {"Que" usually written "Q"}
All: We are the brothers of Que Psi Phi
Leader: The Mother Pearl and that's no lie.
All: The Mother Pearl and that's no lie.
Leader: We're gonna live, we're gonna die
All: We're gonna live, we're gonna die
Leader: In the name of Que Psi Phi.
All: In the name of Que Psi Phi.
Leader: We've come from near we've come from far
Leader: first by lamp and then by star
All: first by lamp and then by star.

Refrain

Leader: In this place of pain and tears,
All: In this place of pain and tears,
Leader: I have learned to persevere.
All: I have learned to persevere.
Leader: Manhood and scholarship,
All: Manhood and scholarship,
Leader: and the meaning of uplift.
Leader: Cooper, Coleman, Love, and Just (varied rhythm) *
All: Cooper, Coleman, Love, and Just,
Leader: They are watching over us.
All: They are watching over us.

Refrain

Leader: I may not see my home again,
All: I'll wave good-bye to all my friends,
Leader: I'll tell my Mama not to cry,
All: I am pledging Que Psi Phi.

Refrain.

Leader: She said "Son along the way,
All: She said "Son along the way,
Leader: watch those cloudy skies of gray.
All: watch those cloudy skies of gray.
Leader: The sun is shining on the other side } (ritardando}
All: The sun is shining on the other side }
Leader; shining brightly Que Psi Phi" }
All: shining brightly Que Psi Phi" } (crescendo)

Refrain (resume previously tempo)

* The last names of the four founders of the fraternity

Elizabeth Fine, "Soulstepping-African American Step Shows" {University of Illinois Press; 2003; pg. 48-49

1995 Probates {pledges}, Howard University

"With shaven heads and gold paint glistening on their faces, the 1995 probates of Omega Psi Phi at Howard University stand at rigid attention, holding across their chest shields decorated with the fraternity insignia. In combat boots, tan trousers, blue sweat shirts, sunglasses, the young men stand with their chins and lower lips thrust out, a ritual facial expression known as the grit
-snip-

I've never heard the term "The grit", but this expression is commonly known as "grittin".