$ git clone -n https://src.fedoraproject.org/rpms/wmbusmeters.git /var/lib/mock/f45-build-38448-724/root/chroot_tmpdir/scmroot/wmbusmeters
Cloning into '/var/lib/mock/f45-build-38448-724/root/chroot_tmpdir/scmroot/wmbusmeters'...
$ git fetch origin 1af5c15c4d4bbd0779d03d618ef88d2b07fbcd56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wmbusmeters
 * [new ref]         1af5c15c4d4bbd0779d03d618ef88d2b07fbcd56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1af5c15 Update to 3.0.0 (rhbz#2490161)