$ git clone -n https://src.fedoraproject.org/rpms/cloog.git /var/lib/mock/f41-build-side-1-2656066-28431/root/chroot_tmpdir/scmroot/cloog
Cloning into '/var/lib/mock/f41-build-side-1-2656066-28431/root/chroot_tmpdir/scmroot/cloog'...
$ git fetch origin f10a745a60dd28eb0c4b7876bcb4084077558b56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cloog
 * [new ref]         f10a745a60dd28eb0c4b7876bcb4084077558b56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f10a745 convert GPLv2+ license to SPDX