$ git clone -n https://src.fedoraproject.org/rpms/qmmp.git /var/lib/mock/f41-build-side-1-2674999-29291/root/chroot_tmpdir/scmroot/qmmp
Cloning into '/var/lib/mock/f41-build-side-1-2674999-29291/root/chroot_tmpdir/scmroot/qmmp'...
$ git fetch origin b778ecf3820ae5b22dee7f3bf7906cfe83c16f6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qmmp
 * [new ref]         b778ecf3820ae5b22dee7f3bf7906cfe83c16f6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b778ecf new version 2.1.9 (rhbz#2304136)