$ git clone -n https://src.fedoraproject.org/rpms/gambas3.git /var/lib/mock/f38-build-side-42-init-devel-718877-27296/root/chroot_tmpdir/scmroot/gambas3
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-718877-27296/root/chroot_tmpdir/scmroot/gambas3'...
$ git fetch origin 61cccfee98a93c89ef06e16360288a533d0e8aff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gambas3
 * [new ref]         61cccfee98a93c89ef06e16360288a533d0e8aff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61cccfe update to 3.18.1