$ git clone -n https://src.fedoraproject.org/rpms/bchunk.git /var/lib/mock/f41-build-side-1-2632297-25785/root/chroot_tmpdir/scmroot/bchunk
Cloning into '/var/lib/mock/f41-build-side-1-2632297-25785/root/chroot_tmpdir/scmroot/bchunk'...
$ git fetch origin 7bbebd9fb5fda072b8127b1a63950fc0a9768a51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bchunk
 * [new ref]         7bbebd9fb5fda072b8127b1a63950fc0a9768a51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bbebd9 convert GPLv2+ license to SPDX