$ git clone -n https://src.fedoraproject.org/rpms/perl-POE-Filter-Zlib.git /var/lib/mock/f45-build-25544-611/root/chroot_tmpdir/scmroot/perl-POE-Filter-Zlib
Cloning into '/var/lib/mock/f45-build-25544-611/root/chroot_tmpdir/scmroot/perl-POE-Filter-Zlib'...
$ git fetch origin c689f2224e3f1cb0db1fcd8166bea9d238b6f6df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-POE-Filter-Zlib
 * [new ref]         c689f2224e3f1cb0db1fcd8166bea9d238b6f6df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c689f22 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild