$ git clone -n https://src.fedoraproject.org/rpms/qbs.git /var/lib/mock/f45-build-33875-674/root/chroot_tmpdir/scmroot/qbs
Cloning into '/var/lib/mock/f45-build-33875-674/root/chroot_tmpdir/scmroot/qbs'...
$ git fetch origin ac1a9d8c9f9ea6108db990a31514268defb1d689:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qbs
 * [new ref]         ac1a9d8c9f9ea6108db990a31514268defb1d689 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac1a9d8 Update to 3.3.1