$ git clone -n https://src.fedoraproject.org/rpms/php-phpspec-prophecy.git /var/lib/mock/f39-build-2309335-57342/root/chroot_tmpdir/scmroot/php-phpspec-prophecy
Cloning into '/var/lib/mock/f39-build-2309335-57342/root/chroot_tmpdir/scmroot/php-phpspec-prophecy'...
$ git fetch origin 674ec8535760c7e9219fa87be3968430ae44cb0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-phpspec-prophecy
 * [new ref]         674ec8535760c7e9219fa87be3968430ae44cb0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 674ec85 1.18.0 sources