$ git clone -n https://src.fedoraproject.org/rpms/rubygem-http_parser.rb.git /var/lib/mock/f31-build-52154-27623/root/chroot_tmpdir/scmroot/rubygem-http_parser.rb
Cloning into '/var/lib/mock/f31-build-52154-27623/root/chroot_tmpdir/scmroot/rubygem-http_parser.rb'...
$ git reset --hard a38841e534ae5f50b351532b528a1fbe205f050d
HEAD is now at a38841e - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild