Fix local clone on MinGW: absolute paths must use the drive letter.

The default of pwd of MSYS's bash and /bin/pwd are to use /c/rest/of/path
notation instead of c:/rest/of/path. But the former is not supported
by programs that use the standard C runtime (instead of MinGW's own
runtime). Hence, we must make sure that only drive letter notations
are generated by using pwd's -W option.

git-clone.sh

@@ -19,11 +19,11 @@ usage() {
 
 get_repo_base() {
 	(
-		cd "`/bin/pwd`" &&
+		cd "`/bin/pwd -W`" &&
 		cd "$1" &&
 		{
 			cd .git
-			pwd
+			pwd -W
 		}
 	) 2>/dev/null
 }