$ git clone -n https://src.fedoraproject.org/rpms/ghc-html.git /var/lib/mock/f41-build-842704-161699/root/chroot_tmpdir/scmroot/ghc-html
Cloning into '/var/lib/mock/f41-build-842704-161699/root/chroot_tmpdir/scmroot/ghc-html'...
$ git fetch origin af160f9f37e5e873f52279888cca58b44108beed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-html
 * [new ref]         af160f9f37e5e873f52279888cca58b44108beed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af160f9 bump release