$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-global-state5.git /var/lib/mock/f40-build-2632166-65847/root/chroot_tmpdir/scmroot/php-sebastian-global-state5
Cloning into '/var/lib/mock/f40-build-2632166-65847/root/chroot_tmpdir/scmroot/php-sebastian-global-state5'...
$ git fetch origin 21e6026d768008414cb296cfbd0be7a792b10b8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-global-state5
 * [new ref]         21e6026d768008414cb296cfbd0be7a792b10b8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21e6026 v5.0.7