$ git clone -n https://src.fedoraproject.org/rpms/rust-atoi.git /var/lib/mock/f45-build-40298-770/root/chroot_tmpdir/scmroot/rust-atoi
Cloning into '/var/lib/mock/f45-build-40298-770/root/chroot_tmpdir/scmroot/rust-atoi'...
$ git fetch origin 2fda8e5778d6b996190c081043ac0ee401bd3f93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atoi
 * [new ref]         2fda8e5778d6b996190c081043ac0ee401bd3f93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fda8e5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild