$ git clone -n https://src.fedoraproject.org/rpms/php-wikimedia-assert.git /var/lib/mock/f45-build-28447-629/root/chroot_tmpdir/scmroot/php-wikimedia-assert
Cloning into '/var/lib/mock/f45-build-28447-629/root/chroot_tmpdir/scmroot/php-wikimedia-assert'...
$ git fetch origin c8d9e2c08d8a75b3a046183a85e30e6478aee7e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-wikimedia-assert
 * [new ref]         c8d9e2c08d8a75b3a046183a85e30e6478aee7e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8d9e2c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild