$ git clone -n https://src.fedoraproject.org/rpms/perl-Set-Infinite.git /var/lib/mock/f45-build-26243-616/root/chroot_tmpdir/scmroot/perl-Set-Infinite
Cloning into '/var/lib/mock/f45-build-26243-616/root/chroot_tmpdir/scmroot/perl-Set-Infinite'...
$ git fetch origin c01d8570de02a432794838c7d6658888096a14a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Set-Infinite
 * [new ref]         c01d8570de02a432794838c7d6658888096a14a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c01d857 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild