$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-version7.git /var/lib/mock/f45-build-28379-629/root/chroot_tmpdir/scmroot/php-sebastian-version7
Cloning into '/var/lib/mock/f45-build-28379-629/root/chroot_tmpdir/scmroot/php-sebastian-version7'...
$ git fetch origin 29acb4a98af97ba3a0e3ee90e1db893d8260db91:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-version7
 * [new ref]         29acb4a98af97ba3a0e3ee90e1db893d8260db91 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29acb4a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild