$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-code-unit3.git /var/lib/mock/f42-build-side-1-3504325-45983/root/chroot_tmpdir/scmroot/php-sebastian-code-unit3
Cloning into '/var/lib/mock/f42-build-side-1-3504325-45983/root/chroot_tmpdir/scmroot/php-sebastian-code-unit3'...
$ git fetch origin 705beb221354a07426cc803ca36c4ba97a661bcc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-code-unit3
 * [new ref]         705beb221354a07426cc803ca36c4ba97a661bcc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 705beb2 v3.0.3