$ git clone -n https://src.fedoraproject.org/rpms/lsfrom.git /var/lib/mock/f39-build-2243765-53696/root/chroot_tmpdir/scmroot/lsfrom
Cloning into '/var/lib/mock/f39-build-2243765-53696/root/chroot_tmpdir/scmroot/lsfrom'...
$ git fetch origin fc228cdc7f39c9f75c15b2a03f91b09344c24a7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lsfrom
 * [new ref]         fc228cdc7f39c9f75c15b2a03f91b09344c24a7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc228cd https://hackage.haskell.org/package/lsfrom-1.0/changelog