$ git clone -n https://src.fedoraproject.org/rpms/lvm2.git /var/lib/mock/f41-build-815182-149424/root/chroot_tmpdir/scmroot/lvm2
Cloning into '/var/lib/mock/f41-build-815182-149424/root/chroot_tmpdir/scmroot/lvm2'...
$ git fetch origin a79c14423c09c4d229d983edbcc25bc8936dbf0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lvm2
 * [new ref]         a79c14423c09c4d229d983edbcc25bc8936dbf0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a79c144 Fix DM version