$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-index.git /var/lib/mock/f40-build-2413651-60564/root/chroot_tmpdir/scmroot/rust-gix-index
Cloning into '/var/lib/mock/f40-build-2413651-60564/root/chroot_tmpdir/scmroot/rust-gix-index'...
$ git fetch origin 68dc2e69a43e8c0a219880a4076872cfe6d61276:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-index
 * [new ref]         68dc2e69a43e8c0a219880a4076872cfe6d61276 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68dc2e6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild