$ git clone -n https://src.fedoraproject.org/rpms/php-zstd.git /var/lib/mock/f40-build-733898-105550/root/chroot_tmpdir/scmroot/php-zstd
Cloning into '/var/lib/mock/f40-build-733898-105550/root/chroot_tmpdir/scmroot/php-zstd'...
$ git fetch origin cc69ce4a1bee9d026da6cf565171a6c0de999aaa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-zstd
 * [new ref]         cc69ce4a1bee9d026da6cf565171a6c0de999aaa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc69ce4 rebuild for https://fedoraproject.org/wiki/Changes/php83