$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Validate-IP.git /var/lib/mock/f45-build-23010-595/root/chroot_tmpdir/scmroot/perl-Data-Validate-IP
Cloning into '/var/lib/mock/f45-build-23010-595/root/chroot_tmpdir/scmroot/perl-Data-Validate-IP'...
$ git fetch origin 20a176be0b578e337a4627ffc0614d905961c8ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Validate-IP
 * [new ref]         20a176be0b578e337a4627ffc0614d905961c8ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20a176b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild