$ git clone -n https://src.fedoraproject.org/rpms/R-foreach.git /var/lib/mock/f40-build-1168879-21689/root/chroot_tmpdir/scmroot/R-foreach
Cloning into '/var/lib/mock/f40-build-1168879-21689/root/chroot_tmpdir/scmroot/R-foreach'...
$ git fetch origin 65cab5c1c754af822b5c843a2a3c30ea939676ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-foreach
 * [new ref]         65cab5c1c754af822b5c843a2a3c30ea939676ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65cab5c R-maint-sig mass rebuild