$ git clone -n https://src.fedoraproject.org/rpms/rust-spin.git /var/lib/mock/f40-build-2716823-72689/root/chroot_tmpdir/scmroot/rust-spin
Cloning into '/var/lib/mock/f40-build-2716823-72689/root/chroot_tmpdir/scmroot/rust-spin'...
$ git fetch origin 9c9be942ddd9b3fd841225bd22370707c759f605:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-spin
 * [new ref]         9c9be942ddd9b3fd841225bd22370707c759f605 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c9be94 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild