$ git clone -n https://src.fedoraproject.org/rpms/python-symengine.git /var/lib/mock/f45-build-33242-668/root/chroot_tmpdir/scmroot/python-symengine
Cloning into '/var/lib/mock/f45-build-33242-668/root/chroot_tmpdir/scmroot/python-symengine'...
$ git fetch origin 1a528019a8e05a73662d593ea427889e9111132d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-symengine
 * [new ref]         1a528019a8e05a73662d593ea427889e9111132d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a52801 Rebuild for flint 3.6.0