$ git clone -n https://src.fedoraproject.org/rpms/rust-atk-sys0.17.git /var/lib/mock/f41-build-side-1-2923619-34982/root/chroot_tmpdir/scmroot/rust-atk-sys0.17
Cloning into '/var/lib/mock/f41-build-side-1-2923619-34982/root/chroot_tmpdir/scmroot/rust-atk-sys0.17'...
$ git fetch origin 7272f0f577db31dc0b3e8f865e9dc1d43da1314e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atk-sys0.17
 * [new ref]         7272f0f577db31dc0b3e8f865e9dc1d43da1314e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7272f0f compat package no longer needed