$ git clone -n https://src.fedoraproject.org/rpms/xdg-desktop-portal-gtk.git /var/lib/mock/f45-build-38680-727/root/chroot_tmpdir/scmroot/xdg-desktop-portal-gtk
Cloning into '/var/lib/mock/f45-build-38680-727/root/chroot_tmpdir/scmroot/xdg-desktop-portal-gtk'...
$ git fetch origin a52cf8c3754e1e89a5886128f448b2b8beed8fd7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xdg-desktop-portal-gtk
 * [new ref]         a52cf8c3754e1e89a5886128f448b2b8beed8fd7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a52cf8c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild