$ git clone -n https://src.fedoraproject.org/rpms/xdg-desktop-portal-xapp.git /var/lib/mock/f41-build-846697-163186/root/chroot_tmpdir/scmroot/xdg-desktop-portal-xapp
Cloning into '/var/lib/mock/f41-build-846697-163186/root/chroot_tmpdir/scmroot/xdg-desktop-portal-xapp'...
$ git fetch origin d47561fbf2521d346ac504d946b9b6cba047eae8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xdg-desktop-portal-xapp
 * [new ref]         d47561fbf2521d346ac504d946b9b6cba047eae8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d47561f fix