$ git clone -n https://src.fedoraproject.org/rpms/gitqlient.git /var/lib/mock/f40-build-2198442-51695/root/chroot_tmpdir/scmroot/gitqlient
Cloning into '/var/lib/mock/f40-build-2198442-51695/root/chroot_tmpdir/scmroot/gitqlient'...
$ git fetch origin 25a2066982f4b3b37a2c7027eb3b54868d2ddcb7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gitqlient
 * [new ref]         25a2066982f4b3b37a2c7027eb3b54868d2ddcb7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25a2066 build: Add Packit config