$ git clone -n https://src.fedoraproject.org/rpms/xdg-desktop-portal.git /var/lib/mock/f42-build-side-1-3555815-46656/root/chroot_tmpdir/scmroot/xdg-desktop-portal
Cloning into '/var/lib/mock/f42-build-side-1-3555815-46656/root/chroot_tmpdir/scmroot/xdg-desktop-portal'...
$ git fetch origin e52a9e5be87d9ed0e22d4c3f14811f8bf903c1c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xdg-desktop-portal
 * [new ref]         e52a9e5be87d9ed0e22d4c3f14811f8bf903c1c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e52a9e5 Update to 1.20.3