$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-ssdeep.git /var/lib/mock/f42-build-862769-171084/root/chroot_tmpdir/scmroot/php-pecl-ssdeep
Cloning into '/var/lib/mock/f42-build-862769-171084/root/chroot_tmpdir/scmroot/php-pecl-ssdeep'...
$ git fetch origin c694408feabbd9ab40024469cbc74275b23cd140:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-ssdeep
 * [new ref]         c694408feabbd9ab40024469cbc74275b23cd140 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c694408 modernize the spec file