$ git clone -n https://src.fedoraproject.org/rpms/python-box.git /var/lib/mock/f39-build-1549318-36897/root/chroot_tmpdir/scmroot/python-box
Cloning into '/var/lib/mock/f39-build-1549318-36897/root/chroot_tmpdir/scmroot/python-box'...
$ git fetch origin b57949c4f72a28e26898e6c24a7a4407872a6b5c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-box
 * [new ref]         b57949c4f72a28e26898e6c24a7a4407872a6b5c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b57949c Update to latest release, 7.1.1 (closes rhbz#2220139)