$ git clone -n https://src.fedoraproject.org/rpms/rust-fs_at.git /var/lib/mock/f40-build-2666697-67123/root/chroot_tmpdir/scmroot/rust-fs_at
Cloning into '/var/lib/mock/f40-build-2666697-67123/root/chroot_tmpdir/scmroot/rust-fs_at'...
$ git fetch origin f0ac13011bcd6a33043b7a4c4b5af2a21396c352:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fs_at
 * [new ref]         f0ac13011bcd6a33043b7a4c4b5af2a21396c352 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0ac130 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild