diff options
| -rw-r--r-- | guix/git.scm | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/guix/git.scm b/guix/git.scm index 364b4997ae..ca77b9f54b 100644 --- a/guix/git.scm +++ b/guix/git.scm @@ -309,8 +309,12 @@ dynamic extent of EXP." definitely available in REPOSITORY, false otherwise." (match ref (('commit . commit) - (false-if-git-not-found - (->bool (commit-lookup repository (string->oid commit))))) + (let ((len (string-length commit)) + (oid (string->oid commit))) + (false-if-git-not-found + (->bool (if (< len 40) + (object-lookup-prefix repository oid len OBJ-COMMIT) + (commit-lookup repository oid)))))) (_ #f))) |