$ git clone -n https://src.fedoraproject.org/rpms/perl-Smart-Comments.git /var/lib/mock/f45-build-26235-616/root/chroot_tmpdir/scmroot/perl-Smart-Comments
Cloning into '/var/lib/mock/f45-build-26235-616/root/chroot_tmpdir/scmroot/perl-Smart-Comments'...
$ git fetch origin e0ca67e22239db7c87a66a7d05c2fc41efbdb549:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Smart-Comments
 * [new ref]         e0ca67e22239db7c87a66a7d05c2fc41efbdb549 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0ca67e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild