$ git clone -n https://src.fedoraproject.org/rpms/perl-HTML-Scrubber.git /var/lib/mock/f45-build-23915-601/root/chroot_tmpdir/scmroot/perl-HTML-Scrubber
Cloning into '/var/lib/mock/f45-build-23915-601/root/chroot_tmpdir/scmroot/perl-HTML-Scrubber'...
$ git fetch origin 92334dcf036f3081e6a6e12abac595606dc19bf5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTML-Scrubber
 * [new ref]         92334dcf036f3081e6a6e12abac595606dc19bf5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92334dc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild