pkg/git: Include commit message and URL in error

go-git: Include the commit message in the returned commit object.
libgit2: Set the URL in the checkout error.

Signed-off-by: Sunny <darkowlzz@protonmail.com>

Author: darkowlzz

pkg/git/gogit/checkout.go

@@ -315,6 +315,7 @@ func buildCommitWithRef(c *object.Commit, ref plumbing.ReferenceName) (*git.Comm
 		Committer: buildSignature(c.Committer),
 		Signature: c.PGPSignature,
 		Encoded:   b,
+		Message:   c.Message,
 	}, nil
 }
 

pkg/git/libgit2/checkout.go

@@ -69,7 +69,7 @@ func (c *CheckoutBranch) Checkout(ctx context.Context, path, url string, opts *g
 		CheckoutBranch: c.Branch,
 	})
 	if err != nil {
-		return nil, fmt.Errorf("unable to clone: %w", gitutil.LibGit2Error(err))
+		return nil, fmt.Errorf("unable to clone '%s': %w", url, gitutil.LibGit2Error(err))
 	}
 	defer repo.Free()
 	head, err := repo.Head()