$ git clone -n https://src.fedoraproject.org/rpms/python3-postgresql.git /var/lib/mock/f40-build-2222124-52699/root/chroot_tmpdir/scmroot/python3-postgresql
Cloning into '/var/lib/mock/f40-build-2222124-52699/root/chroot_tmpdir/scmroot/python3-postgresql'...
$ git fetch origin 3f530f6b6cd51296c82f042e0c81d24253108a92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python3-postgresql
 * [new ref]         3f530f6b6cd51296c82f042e0c81d24253108a92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f530f6 Backport upstream patches to fix C compatibility issues