$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-version6.git /var/lib/mock/f45-build-28381-629/root/chroot_tmpdir/scmroot/php-sebastian-version6
Cloning into '/var/lib/mock/f45-build-28381-629/root/chroot_tmpdir/scmroot/php-sebastian-version6'...
$ git fetch origin 8fe0be9049237b206b7a9dbb3547d1a0134877ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-version6
 * [new ref]         8fe0be9049237b206b7a9dbb3547d1a0134877ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8fe0be9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild