$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-ref.git /var/lib/mock/f40-build-2324983-58795/root/chroot_tmpdir/scmroot/rust-gix-ref
Cloning into '/var/lib/mock/f40-build-2324983-58795/root/chroot_tmpdir/scmroot/rust-gix-ref'...
$ git fetch origin a5550b1cc46c329a1e88833b7f605daa35285046:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-ref
 * [new ref]         a5550b1cc46c329a1e88833b7f605daa35285046 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5550b1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild