From a1d792af4c29ca0a612aa42f7f5b65d8b4ef56de Mon Sep 17 00:00:00 2001
From: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>
Date: Mon, 13 Sep 2021 01:08:00 -0700
Subject: Bugfix: Correct checksum's sha256 when retrieve from remote (#25831)

---
 lib/spack/spack/cmd/checksum.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/spack/spack/cmd/checksum.py b/lib/spack/spack/cmd/checksum.py
index 5f27f9d174..96e36b39b6 100644
--- a/lib/spack/spack/cmd/checksum.py
+++ b/lib/spack/spack/cmd/checksum.py
@@ -63,6 +63,16 @@ def checksum(parser, args):
         if not url_dict:
             tty.die("Could not find any versions for {0}".format(pkg.name))
 
+        # And ensure the specified version URLs take precedence, if available
+        try:
+            explicit_dict = {}
+            for v in pkg.versions:
+                if not v.isdevelop():
+                    explicit_dict[v] = pkg.url_for_version(v)
+            url_dict.update(explicit_dict)
+        except spack.package.NoURLError:
+            pass
+
     version_lines = spack.stage.get_checksums_for_versions(
         url_dict, pkg.name, keep_stage=args.keep_stage,
         batch=(args.batch or len(args.versions) > 0 or len(url_dict) == 1),
-- 
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