$ git clone -n https://src.fedoraproject.org/rpms/xdg-desktop-portal-kde.git /var/lib/mock/f41-build-823443-153745/root/chroot_tmpdir/scmroot/xdg-desktop-portal-kde
Cloning into '/var/lib/mock/f41-build-823443-153745/root/chroot_tmpdir/scmroot/xdg-desktop-portal-kde'...
$ git fetch origin 52511ea30d8a627bb01fe7dc733df79bb4704a72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xdg-desktop-portal-kde
 * [new ref]         52511ea30d8a627bb01fe7dc733df79bb4704a72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52511ea rebuild