$ git clone -n https://src.fedoraproject.org/rpms/rust-unescape.git /var/lib/mock/f40-build-2040436-48355/root/chroot_tmpdir/scmroot/rust-unescape
Cloning into '/var/lib/mock/f40-build-2040436-48355/root/chroot_tmpdir/scmroot/rust-unescape'...
$ git fetch origin a88097e3d47be4bb9d983b2196e6f6f6bcb46d65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unescape
 * [new ref]         a88097e3d47be4bb9d983b2196e6f6f6bcb46d65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a88097e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild