$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-event.git /var/lib/mock/f40-build-784932-133670/root/chroot_tmpdir/scmroot/php-pecl-event
Cloning into '/var/lib/mock/f40-build-784932-133670/root/chroot_tmpdir/scmroot/php-pecl-event'...
$ git fetch origin 21b3e02417d0f0a341b82409d4a5cc5ba1503f7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-event
 * [new ref]         21b3e02417d0f0a341b82409d4a5cc5ba1503f7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21b3e02 v3.1.3