R Under development (unstable) (2024-02-20 r85959 ucrt) -- "Unsuffered Consequences"
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> l = structure(list(as.raw(c(0x02, 0x00, 0x02, 0x02, 0x02, 0x08, 0x08))), class = "TWKB")
> suppressPackageStartupMessages(library(sf))
> suppressPackageStartupMessages(library(lwgeom))
> st_as_sfc(l)
Geometry set for 1 feature 
Geometry type: LINESTRING
Dimension:     XY
Bounding box:  xmin: 1 ymin: 1 xmax: 5 ymax: 5
CRS:           NA
LINESTRING (1 1, 5 5)
> st_as_sfc(structure(list(l[[1]], l[[1]]), class = "TWKB"))
Geometry set for 2 features 
Geometry type: LINESTRING
Dimension:     XY
Bounding box:  xmin: 1 ymin: 1 xmax: 5 ymax: 5
CRS:           NA
LINESTRING (1 1, 5 5)
LINESTRING (1 1, 5 5)
> 
> proc.time()
   user  system elapsed 
   0.46    0.04    0.50