$ git clone -n https://src.fedoraproject.org/rpms/qbs.git /var/lib/mock/f41-build-856982-167857/root/chroot_tmpdir/scmroot/qbs
Cloning into '/var/lib/mock/f41-build-856982-167857/root/chroot_tmpdir/scmroot/qbs'...
$ git fetch origin 0db330301ef5cefb35e3b7083c756231187bb2cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qbs
 * [new ref]         0db330301ef5cefb35e3b7083c756231187bb2cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0db3303 Update to 2.4.2