$ git clone -n https://src.fedoraproject.org/rpms/rclone.git /var/lib/mock/f42-build-867066-174622/root/chroot_tmpdir/scmroot/rclone
Cloning into '/var/lib/mock/f42-build-867066-174622/root/chroot_tmpdir/scmroot/rclone'...
$ git fetch origin 7547eaea0c8c040539e7b5bf7cde017f85060512:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rclone
 * [new ref]         7547eaea0c8c040539e7b5bf7cde017f85060512 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7547eae Restore previous version