$ git clone -n https://src.fedoraproject.org/rpms/perl-IO-Zlib.git /var/lib/mock/f41-build-815754-149744/root/chroot_tmpdir/scmroot/perl-IO-Zlib
Cloning into '/var/lib/mock/f41-build-815754-149744/root/chroot_tmpdir/scmroot/perl-IO-Zlib'...
$ git fetch origin 66855ec710efcab6e430ef7150d0a7d3596a34d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IO-Zlib
 * [new ref]         66855ec710efcab6e430ef7150d0a7d3596a34d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66855ec Increase release to favour standalone package