$ git clone -n https://src.fedoraproject.org/rpms/backup-light.git /var/lib/mock/f41-build-side-1-2632196-25777/root/chroot_tmpdir/scmroot/backup-light
Cloning into '/var/lib/mock/f41-build-side-1-2632196-25777/root/chroot_tmpdir/scmroot/backup-light'...
$ git fetch origin 9cbd3e3df897157466f916c46b43820f875d0e96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/backup-light
 * [new ref]         9cbd3e3df897157466f916c46b43820f875d0e96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9cbd3e3 convert GPLv2+ license to SPDX