$ git clone -n https://src.fedoraproject.org/rpms/phd2.git /var/lib/mock/f42-build-866179-173788/root/chroot_tmpdir/scmroot/phd2
Cloning into '/var/lib/mock/f42-build-866179-173788/root/chroot_tmpdir/scmroot/phd2'...
$ git fetch origin 3e95906a5f40deeea06b721037f4be1f021404ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/phd2
 * [new ref]         3e95906a5f40deeea06b721037f4be1f021404ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e95906 Rebuilt for libnova v0.16