[PATCH v4 7/7] docs: mention --refetch fetch option

["Robert Coup via GitGitGadget" <gitgitgadget@gmail.com>]

From: Robert Coup <robert@coup.net.nz>

Document it for partial clones as a means to apply a new filter, and
reference it from the remote.<name>.partialclonefilter config parameter.

Signed-off-by: Robert Coup <robert@coup.net.nz>
---
 Documentation/config/remote.txt           | 6 ++++--
 Documentation/technical/partial-clone.txt | 3 +++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Documentation/config/remote.txt b/Documentation/config/remote.txt
index a8e6437a903..0678b4bcfef 100644
--- a/Documentation/config/remote.txt
+++ b/Documentation/config/remote.txt
@@ -82,5 +82,7 @@ remote.<name>.promisor::
 	objects.
 
 remote.<name>.partialclonefilter::
-	The filter that will be applied when fetching from this
-	promisor remote.
+	The filter that will be applied when fetching from this	promisor remote.
+	Changing or clearing this value will only affect fetches for new commits.
+	To fetch associated objects for commits already present in the local object
+	database, use the `--refetch` option of linkgit:git-fetch[1].
diff --git a/Documentation/technical/partial-clone.txt b/Documentation/technical/partial-clone.txt
index a0dd7c66f24..99f0eb30406 100644
--- a/Documentation/technical/partial-clone.txt
+++ b/Documentation/technical/partial-clone.txt
@@ -181,6 +181,9 @@ Fetching Missing Objects
   currently fetches all objects referred to by the requested objects, even
   though they are not necessary.
 
+- Fetching with `--refetch` will request a complete new filtered packfile from
+  the remote, which can be used to change a filter without needing to
+  dynamically fetch missing objects.
 
 Using many promisor remotes
 ---------------------------
-- 
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