$ git clone -n https://src.fedoraproject.org/rpms/ghc-bifunctors.git /var/lib/mock/f38-build-side-42-init-devel-1084157-29979/root/chroot_tmpdir/scmroot/ghc-bifunctors
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1084157-29979/root/chroot_tmpdir/scmroot/ghc-bifunctors'...
$ git fetch origin 14117375131b1320c84e8314389140833ed820cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-bifunctors
 * [new ref]         14117375131b1320c84e8314389140833ed820cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1411737 Convert to %autorelease and %autochangelog