$ git clone -n https://src.fedoraproject.org/rpms/gambas3.git /var/lib/mock/f40-build-1966285-25208/root/chroot_tmpdir/scmroot/gambas3
Cloning into '/var/lib/mock/f40-build-1966285-25208/root/chroot_tmpdir/scmroot/gambas3'...
$ git fetch origin 37affca2f6b1fe0c5a2e82526c8262662f226a1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gambas3
 * [new ref]         37affca2f6b1fe0c5a2e82526c8262662f226a1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37affca conditionalize openssl-devel-engine BR for F41+