$ git clone -n https://src.fedoraproject.org/rpms/rekollect.git /var/lib/mock/f41-build-side-1-2768927-32100/root/chroot_tmpdir/scmroot/rekollect
Cloning into '/var/lib/mock/f41-build-side-1-2768927-32100/root/chroot_tmpdir/scmroot/rekollect'...
$ git fetch origin 7827e9554d439af84aa2a7b03e526d99ab167a7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rekollect
 * [new ref]         7827e9554d439af84aa2a7b03e526d99ab167a7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7827e95 convert GPLv2+ license to SPDX