$ git clone -n https://src.fedoraproject.org/rpms/php-phpunit-php-file-iterator4.git /var/lib/mock/f38-build-side-42-init-devel-1082719-29835/root/chroot_tmpdir/scmroot/php-phpunit-php-file-iterator4
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1082719-29835/root/chroot_tmpdir/scmroot/php-phpunit-php-file-iterator4'...
$ git fetch origin 4c4ad1b46b39550d36ff8ca8b3ffdbbf722d21b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-phpunit-php-file-iterator4
 * [new ref]         4c4ad1b46b39550d36ff8ca8b3ffdbbf722d21b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c4ad1b cleanup