$ git clone -n https://src.fedoraproject.org/rpms/ghc-pagure.git /var/lib/mock/f41-build-3151946-40566/root/chroot_tmpdir/scmroot/ghc-pagure
Cloning into '/var/lib/mock/f41-build-3151946-40566/root/chroot_tmpdir/scmroot/ghc-pagure'...
$ git fetch origin 2d86129786b8a7a7986cd8882827ec7ab8da250a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pagure
 * [new ref]         2d86129786b8a7a7986cd8882827ec7ab8da250a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d86129 bump release