$ git clone -n https://src.fedoraproject.org/rpms/device-mapper-persistent-data.git /var/lib/mock/f41-build-side-1-2817245-32985/root/chroot_tmpdir/scmroot/device-mapper-persistent-data
Cloning into '/var/lib/mock/f41-build-side-1-2817245-32985/root/chroot_tmpdir/scmroot/device-mapper-persistent-data'...
$ git fetch origin a540c7b432485d963b1a45fa7765eab155d70de3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/device-mapper-persistent-data
 * [new ref]         a540c7b432485d963b1a45fa7765eab155d70de3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a540c7b Update to version 1.1.0