$ git clone -n https://src.fedoraproject.org/rpms/qqc2-desktop-style.git /var/lib/mock/f38-build-717715-96586/root/chroot_tmpdir/scmroot/qqc2-desktop-style
Cloning into '/var/lib/mock/f38-build-717715-96586/root/chroot_tmpdir/scmroot/qqc2-desktop-style'...
$ git fetch origin dd86000dea92393364a85f584f2bafb4ff9a5321:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qqc2-desktop-style
 * [new ref]         dd86000dea92393364a85f584f2bafb4ff9a5321 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd86000 5.106.0