$ git clone -n https://src.fedoraproject.org/rpms/ghc-semver.git /var/lib/mock/f41-build-side-1-2955629-35550/root/chroot_tmpdir/scmroot/ghc-semver
Cloning into '/var/lib/mock/f41-build-side-1-2955629-35550/root/chroot_tmpdir/scmroot/ghc-semver'...
$ git fetch origin 69ae3751ba31ef195b38f4842ed2e72abe82d48c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-semver
 * [new ref]         69ae3751ba31ef195b38f4842ed2e72abe82d48c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69ae375 bump release