$ git clone -n https://src.fedoraproject.org/rpms/rust-atk0.17.git /var/lib/mock/f41-build-side-1-2934406-35233/root/chroot_tmpdir/scmroot/rust-atk0.17
Cloning into '/var/lib/mock/f41-build-side-1-2934406-35233/root/chroot_tmpdir/scmroot/rust-atk0.17'...
$ git fetch origin 10f4df9103ff6d03868b52dd11ee4e4d55f1ce27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atk0.17
 * [new ref]         10f4df9103ff6d03868b52dd11ee4e4d55f1ce27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10f4df9 compat package no longer needed