$ git clone -n https://src.fedoraproject.org/rpms/overgod.git /var/lib/mock/f39-build-1577309-37959/root/chroot_tmpdir/scmroot/overgod
Cloning into '/var/lib/mock/f39-build-1577309-37959/root/chroot_tmpdir/scmroot/overgod'...
$ git fetch origin 2bb4641e2398108454a1b94ceb3c7a91468019b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/overgod
 * [new ref]         2bb4641e2398108454a1b94ceb3c7a91468019b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2bb4641 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild