$ git clone -n https://src.fedoraproject.org/rpms/Random123.git /var/lib/mock/f38-build-side-42-init-devel-981992-29039/root/chroot_tmpdir/scmroot/Random123
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-981992-29039/root/chroot_tmpdir/scmroot/Random123'...
$ git fetch origin 257d17f491a392309416d03b4ab3b9c893ba34b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/Random123
 * [new ref]         257d17f491a392309416d03b4ab3b9c893ba34b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 257d17f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild