$ git clone -n https://src.fedoraproject.org/rpms/libdv.git /var/lib/mock/f45-build-16077-481/root/chroot_tmpdir/scmroot/libdv
Cloning into '/var/lib/mock/f45-build-16077-481/root/chroot_tmpdir/scmroot/libdv'...
$ git fetch origin 45c700572e815f3341aae16c0e1a4b916ffa9b04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdv
 * [new ref]         45c700572e815f3341aae16c0e1a4b916ffa9b04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45c7005 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild