$ git clone -n https://src.fedoraproject.org/rpms/php-brick-varexporter.git /var/lib/mock/f40-build-2166931-50976/root/chroot_tmpdir/scmroot/php-brick-varexporter
Cloning into '/var/lib/mock/f40-build-2166931-50976/root/chroot_tmpdir/scmroot/php-brick-varexporter'...
$ git fetch origin 32b5c9a26b547e638f041df3c4803e8c0b3c0dea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-brick-varexporter
 * [new ref]         32b5c9a26b547e638f041df3c4803e8c0b3c0dea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 32b5c9a update to 0.4.0