$ git clone -n https://src.fedoraproject.org/rpms/lvm2.git /var/lib/mock/f40-build-796008-140454/root/chroot_tmpdir/scmroot/lvm2
Cloning into '/var/lib/mock/f40-build-796008-140454/root/chroot_tmpdir/scmroot/lvm2'...
$ git fetch origin 9091603393b0ed58abe45f22a1ca1ce014fc5495:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lvm2
 * [new ref]         9091603393b0ed58abe45f22a1ca1ce014fc5495 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9091603 New upstream release v2.03.23