$ git clone -n https://src.fedoraproject.org/rpms/python-cachetools.git /var/lib/mock/f45-build-39468-735/root/chroot_tmpdir/scmroot/python-cachetools
Cloning into '/var/lib/mock/f45-build-39468-735/root/chroot_tmpdir/scmroot/python-cachetools'...
$ git fetch origin b44498e602edfab74213a6236035bca04bd0a808:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cachetools
 * [new ref]         b44498e602edfab74213a6236035bca04bd0a808 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b44498e New upstream release 7.1.7 (rhbz#2510096)