$ git clone -n https://src.fedoraproject.org/rpms/perl-OpenFrame.git /var/lib/mock/f45-build-25446-611/root/chroot_tmpdir/scmroot/perl-OpenFrame
Cloning into '/var/lib/mock/f45-build-25446-611/root/chroot_tmpdir/scmroot/perl-OpenFrame'...
$ git fetch origin f44d64b9a7ad6c46ba8a80b31fd6a9125677dabf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-OpenFrame
 * [new ref]         f44d64b9a7ad6c46ba8a80b31fd6a9125677dabf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f44d64b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild