$ git clone -n https://src.fedoraproject.org/rpms/rust-unic-ucd-version.git /var/lib/mock/f40-build-2644297-66501/root/chroot_tmpdir/scmroot/rust-unic-ucd-version
Cloning into '/var/lib/mock/f40-build-2644297-66501/root/chroot_tmpdir/scmroot/rust-unic-ucd-version'...
$ git fetch origin bdbc03f0a5503a24cd8ce5a89775a79f098d3255:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unic-ucd-version
 * [new ref]         bdbc03f0a5503a24cd8ce5a89775a79f098d3255 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdbc03f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild