$ git clone -n https://src.fedoraproject.org/rpms/libqtxdg.git /var/lib/mock/f45-build-16816-491/root/chroot_tmpdir/scmroot/libqtxdg
Cloning into '/var/lib/mock/f45-build-16816-491/root/chroot_tmpdir/scmroot/libqtxdg'...
$ git fetch origin 907ea17c950b8f7703fbaab13adb3621558026c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libqtxdg
 * [new ref]         907ea17c950b8f7703fbaab13adb3621558026c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 907ea17 Rebuild (qt6)