$ git clone -n https://src.fedoraproject.org/rpms/haruna.git /var/lib/mock/f40-build-795787-140317/root/chroot_tmpdir/scmroot/haruna
Cloning into '/var/lib/mock/f40-build-795787-140317/root/chroot_tmpdir/scmroot/haruna'...
$ git fetch origin b0c88f164b695f8ce4d81f48978ce62cb3637474:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/haruna
 * [new ref]         b0c88f164b695f8ce4d81f48978ce62cb3637474 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0c88f1 Require qqc2-desktop-style