$ git clone -n https://src.fedoraproject.org/rpms/celt051.git /var/lib/mock/f41-build-side-1-2632912-25862/root/chroot_tmpdir/scmroot/celt051
Cloning into '/var/lib/mock/f41-build-side-1-2632912-25862/root/chroot_tmpdir/scmroot/celt051'...
$ git fetch origin 2cddd7d9418edad4e11fc4a56c4d38df884cafdc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/celt051
 * [new ref]         2cddd7d9418edad4e11fc4a56c4d38df884cafdc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cddd7d convert license to SPDX