$ git clone -n https://src.fedoraproject.org/rpms/perl-IPTables-ChainMgr.git /var/lib/mock/f45-build-24216-602/root/chroot_tmpdir/scmroot/perl-IPTables-ChainMgr
Cloning into '/var/lib/mock/f45-build-24216-602/root/chroot_tmpdir/scmroot/perl-IPTables-ChainMgr'...
$ git fetch origin cc5cbf64dc93698926df502baa6f4bd17cfb41eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IPTables-ChainMgr
 * [new ref]         cc5cbf64dc93698926df502baa6f4bd17cfb41eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc5cbf6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild