ruby: Remove unused `start_sha` parameter from `#with_branch`

Remove the unused `start_sha` parameter from `#with_branch`.

1 files changed, 3 insertions, 6 deletions

diff --git a/ruby/lib/gitlab/git/operation_service.rb b/ruby/lib/gitlab/git/operation_service.rb
index 63985744e..586ad5077 100644
--- a/ruby/lib/gitlab/git/operation_service.rb
+++ b/ruby/lib/gitlab/git/operation_service.rb
@@ -25,25 +25,22 @@ module Gitlab
         @repository = new_repository
       end
 
-      # Whenever `start_branch_name` or `start_sha` is passed, if `branch_name`
+      # Whenever `start_branch_name` is passed, if `branch_name`
       # doesn't exist, it will be created from the commit pointed to by
-      # `start_branch_name` or `start_sha`.
+      # `start_branch_name`.
       def with_branch(branch_name,
                       start_branch_name: nil,
-                      start_sha: nil,
                       force: false,
                       &block)
         start_branch_name = nil if repository.empty?
 
         if start_branch_name.present? && !repository.branch_exists?(start_branch_name)
           raise ArgumentError, "Cannot find branch '#{start_branch_name}'"
-        elsif start_sha.present? && !repository.commit_id(start_sha)
-          raise ArgumentError, "Cannot find commit '#{start_sha}'"
         end
 
         update_branch_with_hooks(branch_name, force) do
           repository.with_repo_branch_commit(
-            start_sha.presence || start_branch_name.presence || branch_name,
+            start_branch_name.presence || branch_name,
             &block
           )
         end