$ git clone -n https://src.fedoraproject.org/rpms/libqtxdg.git /var/lib/mock/f40-build-2200294-51769/root/chroot_tmpdir/scmroot/libqtxdg
Cloning into '/var/lib/mock/f40-build-2200294-51769/root/chroot_tmpdir/scmroot/libqtxdg'...
$ git fetch origin d6fa271e589fc79d89a0f3c38275d12d2de95940:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libqtxdg
 * [new ref]         d6fa271e589fc79d89a0f3c38275d12d2de95940 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6fa271 libqtxdg: Update to 3.12.0