$ git clone -n https://src.fedoraproject.org/rpms/stellarium.git /var/lib/mock/f42-build-side-1-3555716-46656/root/chroot_tmpdir/scmroot/stellarium
Cloning into '/var/lib/mock/f42-build-side-1-3555716-46656/root/chroot_tmpdir/scmroot/stellarium'...
$ git fetch origin 4861a7752a27509477214cc751bd98b039146cd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stellarium
 * [new ref]         4861a7752a27509477214cc751bd98b039146cd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4861a77 Fix GL context crash