$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-CBC.git /var/lib/mock/f40-build-2016155-46159/root/chroot_tmpdir/scmroot/perl-Crypt-CBC
Cloning into '/var/lib/mock/f40-build-2016155-46159/root/chroot_tmpdir/scmroot/perl-Crypt-CBC'...
$ git fetch origin 9b68fcac0313ed75f5a7bed7b93a1522a7ede95f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-CBC
 * [new ref]         9b68fcac0313ed75f5a7bed7b93a1522a7ede95f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b68fca Don't run additional tests when bootstrapping or building for EPEL