$ git clone -n https://src.fedoraproject.org/rpms/rust-symlink.git /var/lib/mock/f40-build-2063905-49167/root/chroot_tmpdir/scmroot/rust-symlink
Cloning into '/var/lib/mock/f40-build-2063905-49167/root/chroot_tmpdir/scmroot/rust-symlink'...
$ git fetch origin c7663f1e7653941e00580fc38f42a1683c9effa5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-symlink
 * [new ref]         c7663f1e7653941e00580fc38f42a1683c9effa5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7663f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild