_artifactcache: Fix pull in non-strict mode

Strong ref was not created.

1 files changed, 3 insertions, 3 deletions

diff --git a/buildstream/_artifactcache/artifactcache.py b/buildstream/_artifactcache/artifactcache.py
index a7208e8f2..4ebc79848 100644
--- a/buildstream/_artifactcache/artifactcache.py
+++ b/buildstream/_artifactcache/artifactcache.py
@@ -277,13 +277,13 @@ class ArtifactCache():
                 _ostree.fetch(self.repo, remote=remote,
                               ref=weak_ref, progress=progress)
 
+                # resolve weak_ref to checksum
+                rev = _ostree.checksum(self.repo, weak_ref)
+
                 # extract strong cache key from this newly fetched artifact
                 element._cached(recalculate=True)
                 ref = buildref(element, element._get_cache_key_from_artifact())
 
-                # resolve ref to checksum
-                rev = _ostree.checksum(self.repo, ref)
-
                 # create tag for strong cache key
                 _ostree.set_ref(self.repo, ref, rev)
             else: