$ git clone -n https://src.fedoraproject.org/rpms/mtn-browse.git /var/lib/mock/f39-build-1596163-38353/root/chroot_tmpdir/scmroot/mtn-browse
Cloning into '/var/lib/mock/f39-build-1596163-38353/root/chroot_tmpdir/scmroot/mtn-browse'...
$ git fetch origin 9a70c2e3cab6a1f5615f0da7b414924e0a1b4f68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mtn-browse
 * [new ref]         9a70c2e3cab6a1f5615f0da7b414924e0a1b4f68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a70c2e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild