$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-ds.git /var/lib/mock/f39-build-2222522-52690/root/chroot_tmpdir/scmroot/php-pecl-ds
Cloning into '/var/lib/mock/f39-build-2222522-52690/root/chroot_tmpdir/scmroot/php-pecl-ds'...
$ git fetch origin 3987a086cd726ca0c8580ddee6c24cd8e8c20093:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-ds
 * [new ref]         3987a086cd726ca0c8580ddee6c24cd8e8c20093 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3987a08 update to 1.5.0