$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk-sys0.17.git /var/lib/mock/f40-build-2641599-66431/root/chroot_tmpdir/scmroot/rust-gtk-sys0.17
Cloning into '/var/lib/mock/f40-build-2641599-66431/root/chroot_tmpdir/scmroot/rust-gtk-sys0.17'...
$ git fetch origin 4a9ce3ef87e532777e8aa50d65cde55c284f3108:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk-sys0.17
 * [new ref]         4a9ce3ef87e532777e8aa50d65cde55c284f3108 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a9ce3e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild