$ git clone -n https://src.fedoraproject.org/rpms/perl-Statistics-Regression.git /var/lib/mock/f45-build-26168-616/root/chroot_tmpdir/scmroot/perl-Statistics-Regression
Cloning into '/var/lib/mock/f45-build-26168-616/root/chroot_tmpdir/scmroot/perl-Statistics-Regression'...
$ git fetch origin 36819e6a896cb969772bb78996331fd7889dc784:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Statistics-Regression
 * [new ref]         36819e6a896cb969772bb78996331fd7889dc784 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36819e6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild