$ git clone -n https://src.fedoraproject.org/rpms/doublecmd.git /var/lib/mock/f40-build-2708599-71509/root/chroot_tmpdir/scmroot/doublecmd
Cloning into '/var/lib/mock/f40-build-2708599-71509/root/chroot_tmpdir/scmroot/doublecmd'...
$ git fetch origin 649d6e70c468fc0f201837a808f02dc5d3159c7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doublecmd
 * [new ref]         649d6e70c468fc0f201837a808f02dc5d3159c7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 649d6e7 Update to 1.1.12.