$ git clone -n https://src.fedoraproject.org/rpms/sympy.git /var/lib/mock/f41-build-1296723-23393/root/chroot_tmpdir/scmroot/sympy
Cloning into '/var/lib/mock/f41-build-1296723-23393/root/chroot_tmpdir/scmroot/sympy'...
$ git fetch origin 29d55a4f0eadb009264dab956f781e4ef0dbc25f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sympy
 * [new ref]         29d55a4f0eadb009264dab956f781e4ef0dbc25f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29d55a4 Version 1.12.1