$ git clone -n https://src.fedoraproject.org/rpms/python-jaraco-stream.git /var/lib/mock/f40-build-2635017-66048/root/chroot_tmpdir/scmroot/python-jaraco-stream
Cloning into '/var/lib/mock/f40-build-2635017-66048/root/chroot_tmpdir/scmroot/python-jaraco-stream'...
$ git fetch origin 8635b17d1e979d8b7b6d5786110338ef934d9405:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jaraco-stream
 * [new ref]         8635b17d1e979d8b7b6d5786110338ef934d9405 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8635b17 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild