How to override _breakpoints.scss for Joomla?

[lipatovroman]

Hello.
I need to override this file: /media/gantry5/engines/nucleus/scss/nucleus/mixins/_breakpoints.scss
I've read the instructions from here https://docs.gantry.org/gantry5/advanced/file-overrides
but none of the options work:

I tried such paths:
/templates/g5_helium/scss/_breakpoints.scss
/templates/g5_helium/custom/scss/_breakpoints.scss
/templates/g5_helium/custom/engine/_breakpoints.scss
/templates/g5_helium/custom/engine/templates/_breakpoints.scss
/templates/g5_helium/custom/engine/mixins/_breakpoints.scss
/templates/g5_helium/custom/engine/nucleus/_breakpoints.scss
/templates/g5_helium/custom/engine/nucleus/mixins/_breakpoints.scss
/templates/g5_helium/custom/engine/scss/_breakpoints.scss
/templates/g5_helium/custom/engine/scss/mixins/_breakpoints.scss
/templates/g5_helium/custom/engine/scss/nucleus/_breakpoints.scss
/templates/g5_helium/custom/engine/scss/nucleus/mixins/_breakpoints.scss

Not working.