[rubygems/rubygems] Fix bundle install when older revisions of git source

https://github.com/rubygems/rubygems/commit/a30712c0fc

1 files changed, 8 insertions, 3 deletions

diff --git a/lib/bundler/source/git/git_proxy.rb b/lib/bundler/source/git/git_proxy.rb
index 53a9a78ddf..4922321343 100644
--- a/lib/bundler/source/git/git_proxy.rb
+++ b/lib/bundler/source/git/git_proxy.rb
@@ -118,7 +118,8 @@ module Bundler
             end
           end
 
-          git "fetch", "--force", "--quiet", *extra_fetch_args, :dir => destination if @commit_ref
+          ref = @commit_ref || (full_sha_revision? && @revision)
+          git "fetch", "--force", "--quiet", *extra_fetch_args(ref), :dir => destination if ref
 
           git "reset", "--hard", @revision, :dir => destination
 
@@ -238,6 +239,10 @@ module Bundler
           ref =~ /\A\h{40}\z/
         end
 
+        def full_sha_revision?
+          @revision.match?(/\A\h{40}\z/)
+        end
+
         def git_null(*command, dir: nil)
           check_allowed(command)
 
@@ -399,9 +404,9 @@ module Bundler
           ["--depth", depth.to_s]
         end
 
-        def extra_fetch_args
+        def extra_fetch_args(ref)
           extra_args = [path.to_s, *depth_args]
-          extra_args.push(@commit_ref)
+          extra_args.push(ref)
           extra_args
         end