$ git clone -n https://src.fedoraproject.org/rpms/ghc-numbers.git /var/lib/mock/f39-build-1713108-41228/root/chroot_tmpdir/scmroot/ghc-numbers
Cloning into '/var/lib/mock/f39-build-1713108-41228/root/chroot_tmpdir/scmroot/ghc-numbers'...
$ git fetch origin 69197ec022b13ceef1d3b6289f49daecdae50981:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-numbers
 * [new ref]         69197ec022b13ceef1d3b6289f49daecdae50981 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69197ec bump release