$ git clone -n https://src.fedoraproject.org/rpms/rust-polling2.git /var/lib/mock/f40-build-2326678-58841/root/chroot_tmpdir/scmroot/rust-polling2
Cloning into '/var/lib/mock/f40-build-2326678-58841/root/chroot_tmpdir/scmroot/rust-polling2'...
$ git fetch origin 9f1ef0dfd3bd626ece43e93b924245d16f5d7864:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-polling2
 * [new ref]         9f1ef0dfd3bd626ece43e93b924245d16f5d7864 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f1ef0d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild