Man pages matching name xcb_copy_colormap_and_free in section 3:

xcb_copy_colormap_and_free.3.en	debian 10 / libxcb-doc
xcb_copy_colormap_and_free.3.en	debian 11 / libxcb-doc
xcb_copy_colormap_and_free.3.en	debian 12 / libxcb-doc