$ git clone -n https://src.fedoraproject.org/rpms/celestia-data.git /var/lib/mock/f39-build-1854883-42395/root/chroot_tmpdir/scmroot/celestia-data
Cloning into '/var/lib/mock/f39-build-1854883-42395/root/chroot_tmpdir/scmroot/celestia-data'...
$ git fetch origin 924c453c5350b7914508f12e5e1a7eac3c66d757:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/celestia-data
 * [new ref]         924c453c5350b7914508f12e5e1a7eac3c66d757 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 924c453 Update to latest snapshot