$ git clone -n https://src.fedoraproject.org/rpms/python-mpmath.git /var/lib/mock/f40-build-2106474-50593/root/chroot_tmpdir/scmroot/python-mpmath
Cloning into '/var/lib/mock/f40-build-2106474-50593/root/chroot_tmpdir/scmroot/python-mpmath'...
$ git fetch origin 8b4b1820e5c80a276e3300d54e99769a52d459b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mpmath
 * [new ref]         8b4b1820e5c80a276e3300d54e99769a52d459b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b4b182 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild