$ git clone -n https://src.fedoraproject.org/rpms/perl-DBI.git /var/lib/mock/f40-build-732688-104925/root/chroot_tmpdir/scmroot/perl-DBI
Cloning into '/var/lib/mock/f40-build-732688-104925/root/chroot_tmpdir/scmroot/perl-DBI'...
$ git fetch origin 5a87aac0dbb4bb828021d8df18d0df85bb2813af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DBI
 * [new ref]         5a87aac0dbb4bb828021d8df18d0df85bb2813af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a87aac Fix CVE-2014-10401 and CVE-2014-10402