clone: --bundle-uri cannot be combined with --depth

A previous change added the '--bundle-uri' option, but did not check if the --depth parameter was included. Since bundles are not compatible with shallow clones, provide an error message to the user who is attempting this combination. I am leaving this as its own change, separate from the one that implements '--bundle-uri', because this is more of an advisory for the user. There is nothing wrong with bootstrapping with bundles and then fetching a shallow clone. However, that is likely going to involve too much work for the client _and_ the server. The client will download all of this bundle information containing the full history of the repository only to ignore most of it. The server will get a shallow fetch request, but with a list of haves that might cause a more painful computation of that shallow pack-file. Signed-off-by: Derrick Stolee <derrickstolee@github.com>

Author: derrickstolee

Documentation/git-clone.txt

@@ -327,7 +327,8 @@ or `--mirror` is given)
 Before fetching from the remote, fetch a bundle from the given
 `<uri>` and unbundle the data into the local repository. The refs
 in the bundle will be stored under the hidden `refs/bundle/*`
-namespace.
+namespace. This option is incompatible with `--depth`,
+`--shallow-since`, and `--shallow-exclude`.
 
 :git-clone: 1
 include::urls.txt[]

builtin/clone.c

@@ -937,6 +937,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 option_no_checkout = 1;
 }
 
+if (bundle_uri && deepen)
+die(_("--bundle-uri is incompatible with --depth, --shallow-since, and --shallow-exclude"));
+
 repo_name = argv[0];
 
 path = get_repo_path(repo_name, &is_bundle);

t/t5606-clone-options.sh

@@ -58,6 +58,14 @@ test_expect_success 'disallows --bare with --separate-git-dir' '
 
 '
 
+test_expect_success 'disallows --bundle-uri with shallow options' '
+for option in --depth=1 --shallow-since=01-01-2000 --shallow-exclude=HEAD
+do
+test_must_fail git clone --bundle-uri=bundle $option from to 2>err &&
+grep "bundle-uri is incompatible" err || return 1
+done
+'
+
 test_expect_success 'reject cloning shallow repository' '
 test_when_finished "rm -rf repo" &&
 test_must_fail git clone --reject-shallow shallow-repo out 2>err &&