Urgh I made some wrong amends and I'm too tired to separate the commits out this time

ancestor: Split out of reachability
mergebase: Add merge base routines
internal/commitquery: Add commit query context engine thingy
internal/peel: Shared tag peeling
errors: Shared object query errors
internal/testgit: Add rooted repo helpers; remove raw path access
objectstore/memory: Add in-memory object store
objectid: Add Compare helper

1 files changed, 8 insertions, 0 deletions

diff --git a/objectstore/memory/algorithm.go b/objectstore/memory/algorithm.go
new file mode 100644
index 00000000..db43272e
--- /dev/null
+++ b/objectstore/memory/algorithm.go
@@ -0,0 +1,8 @@
+package memory
+
+import "codeberg.org/lindenii/furgit/objectid"
+
+// Algorithm returns the object ID algorithm used by the store.
+func (store *Store) Algorithm() objectid.Algorithm {
+	return store.algo
+}