tools/image-info/ostree: don't record the commit sha

This is not stable between builds, instead, record the inputhash, which
is.

Signed-off-by: Tom Gundersen <teg@jklm.no>

test/cases/rhel_8-x86_64-rhel_edge_commit-boot.json

@@ -8882,9 +8882,10 @@
       "VERSION_ID": "8.2"
     },
     "ostree": {
-      "commit": "3ce9eb458244c79f125153a362451f8b8cb9d2594c8c58c19e02cb32fc9fe2d3",
       "refs": {
-        "rhel/8/x86_64/edge": "3ce9eb458244c79f125153a362451f8b8cb9d2594c8c58c19e02cb32fc9fe2d3"
+        "rhel/8/x86_64/edge": {
+          "inputhash": "b458ad7246fbf8126d2ff81bf3ec24d70b1c573d26e178da5545bc3d27c7c193"
+        }
       },
       "repo": {
         "core.mode": "archive-z2"

tools/image-info

@@ -333,11 +333,13 @@ def append_ostree_repo(report, repo):
 
     r = ostree("refs")
     refs = r.stdout.strip().split("\n")
-    resolved = {r: ostree("rev-parse", r).stdout.strip() for r in refs}
+    report["ostree"]["refs"] = refs
 
+    resolved = {r: ostree("rev-parse", r).stdout.strip() for r in refs}
     commit = resolved[refs[0]]
-    report["ostree"]["refs"] = resolved
-    report["ostree"]["commit"] = commit
+
+    refs = {r: {"inputhash": ostree("show", "--print-metadata-key=rpmostree.inputhash", resolved[r]).stdout.strip("'\n")} for r in refs}
+    report["ostree"]["refs"] = refs
 
     with tempfile.TemporaryDirectory() as tmpdir:
         tree = os.path.join(tmpdir, "tree")