$ git clone -n https://src.fedoraproject.org/rpms/gnome-software.git /var/lib/mock/f41-build-756794-13422/root/chroot_tmpdir/scmroot/gnome-software
Cloning into '/var/lib/mock/f41-build-756794-13422/root/chroot_tmpdir/scmroot/gnome-software'...
$ git fetch origin 2f2f30d236e3c1906ad2e6430051e978656a6623:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-software
 * [new ref]         2f2f30d236e3c1906ad2e6430051e978656a6623 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f2f30d Build fedora-langpacks subpackage only in Fedora