$ git clone -n https://src.fedoraproject.org/rpms/php-xmpphp.git /var/lib/mock/f45-build-28450-629/root/chroot_tmpdir/scmroot/php-xmpphp
Cloning into '/var/lib/mock/f45-build-28450-629/root/chroot_tmpdir/scmroot/php-xmpphp'...
$ git fetch origin 6b205a90e9ad22522cf8e430efb5aaedd49c9d70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-xmpphp
 * [new ref]         6b205a90e9ad22522cf8e430efb5aaedd49c9d70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b205a9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild