$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Stream-Bulk.git /var/lib/mock/f41-build-side-1-2800793-32804/root/chroot_tmpdir/scmroot/perl-Data-Stream-Bulk
Cloning into '/var/lib/mock/f41-build-side-1-2800793-32804/root/chroot_tmpdir/scmroot/perl-Data-Stream-Bulk'...
$ git fetch origin d8efb775f13d81c0fe1c6cf01ad5dab4aaa0a839:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Stream-Bulk
 * [new ref]         d8efb775f13d81c0fe1c6cf01ad5dab4aaa0a839 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8efb77 convert GPL+ or Artistic license to SPDX