$ git clone -n https://src.fedoraproject.org/rpms/ghc-tls.git /var/lib/mock/f39-build-1926826-43049/root/chroot_tmpdir/scmroot/ghc-tls
Cloning into '/var/lib/mock/f39-build-1926826-43049/root/chroot_tmpdir/scmroot/ghc-tls'...
$ git fetch origin 49464ba06441960300a617c2665edbc00d080401:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-tls
 * [new ref]         49464ba06441960300a617c2665edbc00d080401 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49464ba https://hackage.haskell.org/package/tls-1.6.0/changelog