$ git clone -n https://src.fedoraproject.org/rpms/perl-CGI-FastTemplate.git /var/lib/mock/f45-build-22021-589/root/chroot_tmpdir/scmroot/perl-CGI-FastTemplate
Cloning into '/var/lib/mock/f45-build-22021-589/root/chroot_tmpdir/scmroot/perl-CGI-FastTemplate'...
$ git fetch origin a99a3c6d329a55af1656984710d9f4026e9d9eae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CGI-FastTemplate
 * [new ref]         a99a3c6d329a55af1656984710d9f4026e9d9eae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a99a3c6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild