$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-protocol.git /var/lib/mock/f42-build-3267425-41262/root/chroot_tmpdir/scmroot/rust-nu-protocol
Cloning into '/var/lib/mock/f42-build-3267425-41262/root/chroot_tmpdir/scmroot/rust-nu-protocol'...
$ git fetch origin 77d81b4d1c9c8369dbdab1176e02ee11350e0ac7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-protocol
 * [new ref]         77d81b4d1c9c8369dbdab1176e02ee11350e0ac7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77d81b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild