"Neal Kreitzinger" [off-list ref] writes:
$ git submodule add -f file:///home/me/super/Images.git WebPortal/Images
Usage: git submodule [--quiet] add [-b branch] [--reference <repository>] [--] repository [<path>]
AFAICT this works since 1.7.2 (d27b876 to be precise). Before that the
-f option didn't exist, and wasn't in the docs either.
--
Thomas Rast
trast@{inf,student}.ethz.ch