$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-exporter5.git /var/lib/mock/f40-build-2202836-51899/root/chroot_tmpdir/scmroot/php-sebastian-exporter5
Cloning into '/var/lib/mock/f40-build-2202836-51899/root/chroot_tmpdir/scmroot/php-sebastian-exporter5'...
$ git fetch origin b9bfe10b558ecd67152c76147d9a40fdfb30c455:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-exporter5
 * [new ref]         b9bfe10b558ecd67152c76147d9a40fdfb30c455 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9bfe10 v5.1.1