$ git clone -n https://src.fedoraproject.org/rpms/rust-signal-hook-mio.git /var/lib/mock/f40-build-2658069-66917/root/chroot_tmpdir/scmroot/rust-signal-hook-mio
Cloning into '/var/lib/mock/f40-build-2658069-66917/root/chroot_tmpdir/scmroot/rust-signal-hook-mio'...
$ git fetch origin 921b6b6075938704b63ef1b49b39b360de30f50a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-signal-hook-mio
 * [new ref]         921b6b6075938704b63ef1b49b39b360de30f50a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 921b6b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild