$ git clone -n https://src.fedoraproject.org/rpms/cekit.git /var/lib/mock/f39-build-1726693-41240/root/chroot_tmpdir/scmroot/cekit
Cloning into '/var/lib/mock/f39-build-1726693-41240/root/chroot_tmpdir/scmroot/cekit'...
$ git fetch origin f6e5aab3584f6852572936f9fba78d845275721a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cekit
 * [new ref]         f6e5aab3584f6852572936f9fba78d845275721a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6e5aab feat: release 4.9.1