diff --git a/prelude/decls/git_rules.bzl b/prelude/decls/git_rules.bzl
index 070945e76929d..1e5a41d9dffd8 100644
--- a/prelude/decls/git_rules.bzl
+++ b/prelude/decls/git_rules.bzl
@@ -25,6 +25,9 @@ git_fetch = prelude_rule(
     attrs = (
         # @unsorted-dict-items
         {
+            "allow_cache_upload": attrs.bool(doc = """
+                Whether the results of the fetch can be written to the action cache and CAS.
+            """, default = True),
             "repo": attrs.string(doc = """
                 Url suitable as a git remote.
             """),
diff --git a/prelude/git/git_fetch.bzl b/prelude/git/git_fetch.bzl
index 3b266ab730300..8d93ed6167873 100644
--- a/prelude/git/git_fetch.bzl
+++ b/prelude/git/git_fetch.bzl
@@ -39,6 +39,7 @@ def git_fetch_impl(ctx: AnalysisContext) -> list[Provider]:
         cmd,
         category = "git_fetch",
         local_only = True,
+        allow_cache_upload = ctx.attrs.allow_cache_upload,
     )
 
     return [DefaultInfo(default_output = work_tree)]