$ git clone -n https://src.fedoraproject.org/rpms/R-parsedate.git /var/lib/mock/f38-build-725172-99560/root/chroot_tmpdir/scmroot/R-parsedate
Cloning into '/var/lib/mock/f38-build-725172-99560/root/chroot_tmpdir/scmroot/R-parsedate'...
$ git fetch origin 3ba932cdd43a9732727a5d0f455041af32c4f97f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-parsedate
 * [new ref]         3ba932cdd43a9732727a5d0f455041af32c4f97f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ba932c R-maint-sig mass rebuild