$ git clone -n https://src.fedoraproject.org/rpms/perl-CGI-Untaint-email.git /var/lib/mock/f45-build-21993-589/root/chroot_tmpdir/scmroot/perl-CGI-Untaint-email
Cloning into '/var/lib/mock/f45-build-21993-589/root/chroot_tmpdir/scmroot/perl-CGI-Untaint-email'...
$ git fetch origin 8e2cde30e47f4f5114847367d30f278b4e9a88b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CGI-Untaint-email
 * [new ref]         8e2cde30e47f4f5114847367d30f278b4e9a88b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e2cde3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild