$ git clone -n https://src.fedoraproject.org/rpms/xdg-desktop-portal-gnome.git /var/lib/mock/f40-build-790342-136502/root/chroot_tmpdir/scmroot/xdg-desktop-portal-gnome
Cloning into '/var/lib/mock/f40-build-790342-136502/root/chroot_tmpdir/scmroot/xdg-desktop-portal-gnome'...
$ git fetch origin f7f380693cce5fee49fc662bf15f68595dab8888:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xdg-desktop-portal-gnome
 * [new ref]         f7f380693cce5fee49fc662bf15f68595dab8888 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7f3806 Update to 46.beta