import-url/update: add --no-download/--check-url flags

related: iterative/dvc#7918

content/docs/command-reference/import-url.md

@@ -11,7 +11,7 @@ etc.), and download it to the local project, or make a copy in
 
 ```usage
 usage: dvc import-url [-h] [-q | -v] [-j <number>] [--file <filename>]
-                      [--no-exec] [--to-remote] [-r <name>]
+                      [--no-exec | --no-download] [--to-remote] [-r <name>]
                       [--desc <text>]
                       url [out]
 
@@ -140,6 +140,11 @@ produces a regular stage in `dvc.yaml`.
   finish the operation(s)); or if the target data already exist locally and you
   want to "DVCfy" this state of the project (see also `dvc commit`).
 
+- `--no-download` - create the import `.dvc` with data checksums but without
+  downloading the associated data. This is useful if you need track changes in
+  remote data but do not (yet) need to download data to the local workspace.
+  Data can be later downloaded using `dvc update`.
+
 - `--to-remote` - import a target, but neither move it into the workspace, nor
   cache it. [Transfer it](#example-transfer-to-remote-storage) directly to
   remote storage (the default one unless one is specified with `-r`) instead.

content/docs/command-reference/update.md

@@ -7,7 +7,7 @@ import `.dvc` files.
 ## Synopsis
 
 ```usage
-usage: dvc update [-h] [-q | -v] [--rev <commit>] [-R] [--to-remote]
+usage: dvc update [-h] [-q | -v] [--rev <commit>] [-R] [--no-download] [--to-remote]
                   [-r <name>] [-j <number>] targets [targets ...]
 
 positional arguments:
@@ -50,6 +50,9 @@ $ dvc update --rev master
   directory and its subdirectories for import `.dvc` files to inspect. If there
   are no directories among the targets, this option has no effect.
 
+- `--no-download` - Update checksums in `.dvc` without actually downloading the
+  associated data. Cannot be used with `--to-remote`.
+
 - `--to-remote` - update a `.dvc` file created with `dvc import-url` without
   downloading the latest data.
   [Transfer it](/doc/command-reference/import-url#example-transfer-to-remote-storage)