$ git clone -n https://src.fedoraproject.org/rpms/phd2.git /var/lib/mock/f38-build-side-42-init-devel-774328-27772/root/chroot_tmpdir/scmroot/phd2
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-774328-27772/root/chroot_tmpdir/scmroot/phd2'...
$ git fetch origin 6ec68803067da57bfd478ceeaa4239453bb7d156:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/phd2
 * [new ref]         6ec68803067da57bfd478ceeaa4239453bb7d156 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ec6880 Update to latest snapshot