$ git clone -n https://src.fedoraproject.org/rpms/rust-anes.git /var/lib/mock/f41-build-side-1-2934395-35233/root/chroot_tmpdir/scmroot/rust-anes
Cloning into '/var/lib/mock/f41-build-side-1-2934395-35233/root/chroot_tmpdir/scmroot/rust-anes'...
$ git fetch origin d013447164b3077679213fc55fd84106dd0027e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-anes
 * [new ref]         d013447164b3077679213fc55fd84106dd0027e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d013447 unused leaf package for more than two release cycles