$ git clone -n https://src.fedoraproject.org/rpms/ghc-lazysmallcheck.git /var/lib/mock/f41-build-837638-159296/root/chroot_tmpdir/scmroot/ghc-lazysmallcheck
Cloning into '/var/lib/mock/f41-build-837638-159296/root/chroot_tmpdir/scmroot/ghc-lazysmallcheck'...
$ git fetch origin ccac1fae26744918013f9fbe40c59b60ac891b45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-lazysmallcheck
 * [new ref]         ccac1fae26744918013f9fbe40c59b60ac891b45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccac1fa bump release