$ git clone -n https://src.fedoraproject.org/rpms/php-tcpdf.git /var/lib/mock/f40-build-2632263-65854/root/chroot_tmpdir/scmroot/php-tcpdf
Cloning into '/var/lib/mock/f40-build-2632263-65854/root/chroot_tmpdir/scmroot/php-tcpdf'...
$ git fetch origin 97f65fd1f710c13f16ec3b7b035205af12715ad2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-tcpdf
 * [new ref]         97f65fd1f710c13f16ec3b7b035205af12715ad2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97f65fd v6.7.4