$ git clone -n https://src.fedoraproject.org/rpms/poco.git /var/lib/mock/f38-build-side-42-init-devel-637891-26384/root/chroot_tmpdir/scmroot/poco
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-637891-26384/root/chroot_tmpdir/scmroot/poco'...
$ git fetch origin ee3b8895ea68ed2cdf4cc97e358b02adf379836b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/poco
 * [new ref]         ee3b8895ea68ed2cdf4cc97e358b02adf379836b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee3b889 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild