$ git clone -n https://src.fedoraproject.org/rpms/classified-ads.git /var/lib/mock/f41-build-side-1-2633107-25891/root/chroot_tmpdir/scmroot/classified-ads
Cloning into '/var/lib/mock/f41-build-side-1-2633107-25891/root/chroot_tmpdir/scmroot/classified-ads'...
$ git fetch origin cea4849df8e5249d40c48dbb985f45503dff11b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/classified-ads
 * [new ref]         cea4849df8e5249d40c48dbb985f45503dff11b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cea4849 convert license to SPDX