$ git clone -n https://src.fedoraproject.org/rpms/grass.git /var/lib/mock/f38-build-side-42-init-devel-676768-26691/root/chroot_tmpdir/scmroot/grass
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-676768-26691/root/chroot_tmpdir/scmroot/grass'...
$ git fetch origin 513c0a75439af1166dadf418a5f668755a3d8013:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grass
 * [new ref]         513c0a75439af1166dadf418a5f668755a3d8013 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 513c0a7 New upstream version GRASS GIS 8.2.1