$ git clone -n https://src.fedoraproject.org/rpms/kf5-qqc2-desktop-style.git /var/lib/mock/f40-build-1892455-25062/root/chroot_tmpdir/scmroot/kf5-qqc2-desktop-style
Cloning into '/var/lib/mock/f40-build-1892455-25062/root/chroot_tmpdir/scmroot/kf5-qqc2-desktop-style'...
$ git fetch origin 9f1f6faec0dce0a65c9d0e33ff7cae5a8d931e9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-qqc2-desktop-style
 * [new ref]         9f1f6faec0dce0a65c9d0e33ff7cae5a8d931e9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f1f6fa Use %find_lang_kf5 macro