Relax CachedRepo.checkout requirement that ref is a sha1

1 files changed, 2 insertions, 6 deletions

diff --git a/morphlib/cachedrepo.py b/morphlib/cachedrepo.py
index 5dc7e55d..0f348196 100644
--- a/morphlib/cachedrepo.py
+++ b/morphlib/cachedrepo.py
@@ -135,10 +135,9 @@ class CachedRepo(object):
                           (filename, ref, self))
 
     def checkout(self, ref, target_dir):
-        '''Unpacks the repository in a directory and checks out a SHA1 ref.
+        '''Unpacks the repository in a directory and checks out a commit ref.
 
-        Raises an UnresolvedNamedReferenceError if the specified ref is not
-        a SHA1 ref. Raises a CheckoutDirectoryExistsError if the target
+        Raises a CheckoutDirectoryExistsError if the target
         directory already exists. Raises an InvalidReferenceError if the
         ref is not found in the repository. Raises a CheckoutError if
         something else goes wrong while copying the repository or checking
@@ -146,9 +145,6 @@ class CachedRepo(object):
 
         '''
 
-        if not self.is_valid_sha1(ref):
-            raise UnresolvedNamedReferenceError(self, ref)
-
         if os.path.exists(target_dir):
             raise CheckoutDirectoryExistsError(self, target_dir)