$ git clone -n https://src.fedoraproject.org/rpms/pgp-tools.git /var/lib/mock/f41-build-side-1-2795212-32718/root/chroot_tmpdir/scmroot/pgp-tools
Cloning into '/var/lib/mock/f41-build-side-1-2795212-32718/root/chroot_tmpdir/scmroot/pgp-tools'...
$ git fetch origin c9daf27d60cdd59452ae901d8fe1f0f07fabcc45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pgp-tools
 * [new ref]         c9daf27d60cdd59452ae901d8fe1f0f07fabcc45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9daf27 convert license to SPDX